J.D. Alfaro
Kansas City Royals (ST)SS
Age: 38
Bats/Throws: R/R
5'9" / 170
DOB: 4/28/1988
(38 years, 3 months, 21 days)
SS
Player Dashboard:
Quick Links
More
Stats
Stat Groups:
Select
You can shift + click on full MLB seasons in Season Stats and games in Game Logs to select spans for aggregate stats. Read more here
Heat Map:
Off
On
Minor LeaguesSpring Training
| Season | Team | Level | Age | G G - Games Played | PA PA - Plate Appearances | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | SB SB - Stolen Bases | divider | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | ISO ISO - Isolated Power (SLG-AVG) | BABIP BABIP - Batting Average on Balls in Play | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | wOBA wOBA - Weighted On Base Average (Linear Weights) | xwOBA xwOBA - Expected weighted on-base average | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA | divider | BsR Base Running - Base running runs above average, includes SB or CS | divider | Off Offense - Batting and Base Running combined (above average) | Def Defense - Fielding and Positional Adjustment combined (above average) | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | KCR | R | 20 | 59 | 265 | 9 | 41 | 55 | 9 | 3.8% | 27.2% | .238 | .337 | .266 | .300 | .504 | .341 | 95 | |||||||||
| 2009 | KCR | R | 21 | 59 | 236 | 3 | 27 | 26 | 6 | 8.1% | 26.7% | .139 | .345 | .254 | .319 | .392 | .324 | 86 | |||||||||
| 2009 | KCR | A | 21 | 27 | 108 | 1 | 9 | 2 | 3 | 4.6% | 19.4% | .050 | .200 | .168 | .206 | .218 | .201 | 21 | |||||||||
| 2009 | KCR | MiLB | 21 | 86 | 344 | 4 | 36 | 28 | 9 | 7.0% | 24.4% | .110 | .293 | .226 | .283 | .335 | .285 | 66 | |||||||||
| 2010 | KCR | A | 22 | 28 | 116 | 3 | 11 | 13 | 2 | 3.4% | 29.3% | .156 | .250 | .193 | .221 | .349 | .256 | 54 | |||||||||
| 2010 | KCR | A+ | 22 | 22 | 74 | 0 | 4 | 9 | 0 | 1.4% | 17.6% | .070 | .224 | .183 | .194 | .254 | .202 | 24 | |||||||||
| 2010 | KCR | MiLB | 22 | 50 | 190 | 3 | 15 | 22 | 2 | 2.6% | 24.7% | .122 | .238 | .189 | .211 | .311 | .235 | 42 | |||||||||
| 2011 | KCR | ST | 23 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0% | 100.0% | .000 | .000 | .000 | .000 | .000 | .000 | -100 |
| Season | Team | Level | Age | G G - Games Played | PA PA - Plate Appearances | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | SB SB - Stolen Bases | divider | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | ISO ISO - Isolated Power (SLG-AVG) | BABIP BABIP - Batting Average on Balls in Play | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | wOBA wOBA - Weighted On Base Average (Linear Weights) | xwOBA xwOBA - Expected weighted on-base average | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA | divider | BsR Base Running - Base running runs above average, includes SB or CS | divider | Off Offense - Batting and Base Running combined (above average) | Def Defense - Fielding and Positional Adjustment combined (above average) | WAR WAR - Wins Above Replacement |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | KCR | R | 20 | 59 | 265 | 9 | 41 | 55 | 9 | 3.8% | 27.2% | .238 | .337 | .266 | .300 | .504 | .341 | 95 | |||||||||
| 2009 | KCR | R | 21 | 59 | 236 | 3 | 27 | 26 | 6 | 8.1% | 26.7% | .139 | .345 | .254 | .319 | .392 | .324 | 86 | |||||||||
| 2009 | KCR | A | 21 | 27 | 108 | 1 | 9 | 2 | 3 | 4.6% | 19.4% | .050 | .200 | .168 | .206 | .218 | .201 | 21 | |||||||||
| 2009 | KCR | MiLB | 21 | 86 | 344 | 4 | 36 | 28 | 9 | 7.0% | 24.4% | .110 | .293 | .226 | .283 | .335 | .285 | 66 | |||||||||
| 2010 | KCR | A | 22 | 28 | 116 | 3 | 11 | 13 | 2 | 3.4% | 29.3% | .156 | .250 | .193 | .221 | .349 | .256 | 54 | |||||||||
| 2010 | KCR | A+ | 22 | 22 | 74 | 0 | 4 | 9 | 0 | 1.4% | 17.6% | .070 | .224 | .183 | .194 | .254 | .202 | 24 | |||||||||
| 2010 | KCR | MiLB | 22 | 50 | 190 | 3 | 15 | 22 | 2 | 2.6% | 24.7% | .122 | .238 | .189 | .211 | .311 | .235 | 42 | |||||||||
| 2011 | KCR | ST | 23 | 1 | 1 | 0 | 0 | 0 | 0 | 0.0% | 100.0% | .000 | .000 | .000 | .000 | .000 | .000 | -100 |
Minor LeaguesSpring Training
| Season | Team | Level | G G - Games Played | AB AB - At Bats | PA PA - Plate Appearances | H H - Hits | 1B 1B - Singles | 2B 2B - Doubles | 3B 3B - Triples | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | BB BB - Walks | IBB IBB - Intentional Walks | SO SO - Strike Outs | HBP HBP - Hit by Pitch | SF SF - Sacrifice Fly | SH SH - Sacrifice Hit | GDP GDP - Ground into Double Play | SB SB - Stolen Bases | CS CS - Caught Stealing | AVG AVG - Batting Average (H/AB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | KCR | R | 59 | 248 | 265 | 66 | 30 | 22 | 5 | 9 | 41 | 55 | 10 | 1 | 72 | 3 | 2 | 2 | 2 | 9 | 2 | .266 |
| 2009 | KCR | R | 59 | 209 | 236 | 53 | 33 | 14 | 3 | 3 | 27 | 26 | 19 | 0 | 63 | 2 | 2 | 4 | 5 | 6 | 6 | .254 |
| 2009 | KCR | A | 27 | 101 | 108 | 17 | 14 | 2 | 0 | 1 | 9 | 2 | 5 | 0 | 21 | 0 | 1 | 1 | 2 | 3 | 1 | .168 |
| 2009 | KCR | MiLB | 86 | 310 | 344 | 70 | 47 | 16 | 3 | 4 | 36 | 28 | 24 | 0 | 84 | 2 | 3 | 5 | 7 | 9 | 7 | .226 |
| 2010 | KCR | A | 28 | 109 | 116 | 21 | 11 | 6 | 1 | 3 | 11 | 13 | 4 | 0 | 34 | 0 | 0 | 3 | 1 | 2 | 4 | .193 |
| 2010 | KCR | A+ | 22 | 71 | 74 | 13 | 9 | 3 | 1 | 0 | 4 | 9 | 1 | 0 | 13 | 0 | 0 | 2 | 2 | 0 | 0 | .183 |
| 2010 | KCR | MiLB | 50 | 180 | 190 | 34 | 20 | 9 | 2 | 3 | 15 | 22 | 5 | 0 | 47 | 0 | 0 | 5 | 3 | 2 | 4 | .189 |
| 2011 | KCR | ST | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | .000 |
| Season | Team | Level | G G - Games Played | AB AB - At Bats | PA PA - Plate Appearances | H H - Hits | 1B 1B - Singles | 2B 2B - Doubles | 3B 3B - Triples | HR HR - Home Runs | R R - Runs | RBI RBI - Runs Batted In | BB BB - Walks | IBB IBB - Intentional Walks | SO SO - Strike Outs | HBP HBP - Hit by Pitch | SF SF - Sacrifice Fly | SH SH - Sacrifice Hit | GDP GDP - Ground into Double Play | SB SB - Stolen Bases | CS CS - Caught Stealing | AVG AVG - Batting Average (H/AB) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | KCR | R | 59 | 248 | 265 | 66 | 30 | 22 | 5 | 9 | 41 | 55 | 10 | 1 | 72 | 3 | 2 | 2 | 2 | 9 | 2 | .266 |
| 2009 | KCR | R | 59 | 209 | 236 | 53 | 33 | 14 | 3 | 3 | 27 | 26 | 19 | 0 | 63 | 2 | 2 | 4 | 5 | 6 | 6 | .254 |
| 2009 | KCR | A | 27 | 101 | 108 | 17 | 14 | 2 | 0 | 1 | 9 | 2 | 5 | 0 | 21 | 0 | 1 | 1 | 2 | 3 | 1 | .168 |
| 2009 | KCR | MiLB | 86 | 310 | 344 | 70 | 47 | 16 | 3 | 4 | 36 | 28 | 24 | 0 | 84 | 2 | 3 | 5 | 7 | 9 | 7 | .226 |
| 2010 | KCR | A | 28 | 109 | 116 | 21 | 11 | 6 | 1 | 3 | 11 | 13 | 4 | 0 | 34 | 0 | 0 | 3 | 1 | 2 | 4 | .193 |
| 2010 | KCR | A+ | 22 | 71 | 74 | 13 | 9 | 3 | 1 | 0 | 4 | 9 | 1 | 0 | 13 | 0 | 0 | 2 | 2 | 0 | 0 | .183 |
| 2010 | KCR | MiLB | 50 | 180 | 190 | 34 | 20 | 9 | 2 | 3 | 15 | 22 | 5 | 0 | 47 | 0 | 0 | 5 | 3 | 2 | 4 | .189 |
| 2011 | KCR | ST | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | .000 |
Minor LeaguesSpring TrainingAverages
| Season | Team | Level | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | BB/K BB/K - Walk to Strikeout Ratio (BB/SO) | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | OPS OPS - On Base + Slugging Percentage | divider | ISO ISO - Isolated Power (SLG-AVG) | Spd Spd - Speed Score (4 Component Version) | BABIP BABIP - Batting Average on Balls in Play | divider | UBR UBR - Ultimate Base Running in runs above average, does not include SB or CS | wGDP wGDP - Ground into Double Play Runs above average | XBR XBR - Statcast baserunning above average | wSB wSB - Stolen Bases and Caught Stealing runs above average | divider | wRC wRC - Runs Created based wOBA | wRAA wRAA - Runs Above Average based on wOBA | wOBA wOBA - Weighted On Base Average (Linear Weights) | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | KCR | R | 3.8% | 27.2% | 0.14 | .266 | .300 | .504 | .804 | .238 | 8.4 | .337 | 0.9 | 37 | -1.6 | .341 | 95 | |||||||
| 2009 | KCR | R | 8.1% | 26.7% | 0.30 | .254 | .319 | .392 | .711 | .139 | 5.9 | .345 | -1.6 | 28 | -4.1 | .324 | 86 | |||||||
| 2009 | KCR | A | 4.6% | 19.4% | 0.24 | .168 | .206 | .218 | .423 | .050 | 4.8 | .200 | 0.2 | 2 | -10.5 | .201 | 21 | |||||||
| 2009 | KCR | MiLB | 7.0% | 24.4% | 0.29 | .226 | .283 | .335 | .619 | .110 | 5.7 | .293 | -1.5 | 31 | -14.7 | .285 | 66 | |||||||
| 2010 | KCR | A | 3.4% | 29.3% | 0.12 | .193 | .221 | .349 | .570 | .156 | 5.7 | .250 | -1.3 | 7 | -7.0 | .256 | 54 | |||||||
| 2010 | KCR | A+ | 1.4% | 17.6% | 0.08 | .183 | .194 | .254 | .448 | .070 | 3.3 | .224 | 0.0 | 2 | -7.3 | .202 | 24 | |||||||
| 2010 | KCR | MiLB | 2.6% | 24.7% | 0.11 | .189 | .211 | .311 | .522 | .122 | 5.0 | .238 | -1.3 | 9 | -14.3 | .235 | 42 | |||||||
| 2011 | KCR | ST | 0.0% | 100.0% | 0.00 | .000 | .000 | .000 | .000 | .000 | 0.1 | .000 | 0.0 | 0 | -0.3 | .000 | -100 |
| Season | Team | Level | BB% BB% - Walk Percentage (BB/PA) | K% K% - Strikeout Percentage (SO/PA) | BB/K BB/K - Walk to Strikeout Ratio (BB/SO) | divider | AVG AVG - Batting Average (H/AB) | OBP OBP - On Base Percentage | SLG SLG - Slugging Percentage | OPS OPS - On Base + Slugging Percentage | divider | ISO ISO - Isolated Power (SLG-AVG) | Spd Spd - Speed Score (4 Component Version) | BABIP BABIP - Batting Average on Balls in Play | divider | UBR UBR - Ultimate Base Running in runs above average, does not include SB or CS | wGDP wGDP - Ground into Double Play Runs above average | XBR XBR - Statcast baserunning above average | wSB wSB - Stolen Bases and Caught Stealing runs above average | divider | wRC wRC - Runs Created based wOBA | wRAA wRAA - Runs Above Average based on wOBA | wOBA wOBA - Weighted On Base Average (Linear Weights) | wRC+ wRC+ - Runs per PA scaled where 100 is average; both league and park adjusted; based on wOBA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | KCR | R | 3.8% | 27.2% | 0.14 | .266 | .300 | .504 | .804 | .238 | 8.4 | .337 | 0.9 | 37 | -1.6 | .341 | 95 | |||||||
| 2009 | KCR | R | 8.1% | 26.7% | 0.30 | .254 | .319 | .392 | .711 | .139 | 5.9 | .345 | -1.6 | 28 | -4.1 | .324 | 86 | |||||||
| 2009 | KCR | A | 4.6% | 19.4% | 0.24 | .168 | .206 | .218 | .423 | .050 | 4.8 | .200 | 0.2 | 2 | -10.5 | .201 | 21 | |||||||
| 2009 | KCR | MiLB | 7.0% | 24.4% | 0.29 | .226 | .283 | .335 | .619 | .110 | 5.7 | .293 | -1.5 | 31 | -14.7 | .285 | 66 | |||||||
| 2010 | KCR | A | 3.4% | 29.3% | 0.12 | .193 | .221 | .349 | .570 | .156 | 5.7 | .250 | -1.3 | 7 | -7.0 | .256 | 54 | |||||||
| 2010 | KCR | A+ | 1.4% | 17.6% | 0.08 | .183 | .194 | .254 | .448 | .070 | 3.3 | .224 | 0.0 | 2 | -7.3 | .202 | 24 | |||||||
| 2010 | KCR | MiLB | 2.6% | 24.7% | 0.11 | .189 | .211 | .311 | .522 | .122 | 5.0 | .238 | -1.3 | 9 | -14.3 | .235 | 42 | |||||||
| 2011 | KCR | ST | 0.0% | 100.0% | 0.00 | .000 | .000 | .000 | .000 | .000 | 0.1 | .000 | 0.0 | 0 | -0.3 | .000 | -100 |

