Here are three players with low ownership rates who could pay immediate dividends in fantasy leagues:
Eric Hinske, Atlanta Braves (owned in 6% of Yahoo! leagues)
Anyone in a league with daily transactions should have Hinske on their roster. He may only be a platoon player, but he is destroying RHP this season. He has a .974 OPS versus righties, including a .326 AVG with 4 HR in 89 ABs this season. Yes, that comes with a BABIP of .379 versus RHP. It may not last the whole season. But there is no reason not to pick him up and ride him while he is hot.
Nick Hundley, San Diego Padres (owned in 5% of Yahoo! leagues)
In his last seven games, Hundley is batting .522 with 2 HR and 8 RBIs. Hundley most likely will not keep his current .306 AVG but he does have pretty good power and currently has an 11.8 HR/FB rate. (U) ZiPS forecasts him to finish with 11 HR and even 15 would not be a surprise for the 26-year old. Hundley splits time with Yorvit Torrealba although no strong patterns have emerged. Hundley catches Mat Latos for the most part while Torreabla has a similar relationship with Kevin Correia. If Hundley breaks away to become the primary catcher for the Padres, he could be a boon to fantasy owners.
Ronny Paulino, Florida Marlins (owned in 5% of Yahoo! leagues)
Since John Baker went on the disabled list on May 15th, Paulino has a .308 AVG with 8 R and 13 RBIs in 18 games and 16 starts. Baker is still several weeks away from returning and even when he does come back, Paulino should still see the bulk of the playing time versus LHP. Versus southpaws, Paulino has a .377 AVG with 2 HR and 14 RBIs in 61 ABs this year. Lifetime versus lefties Paulino has a .339/.393/.494 mark in 494 PA.