The Cincinnati Reds may not have Shin-Soo Choo past this season, they acquired him this winter and he's headed for free agency, but the outfielder has made a huge impact in a short time.

Cincinnati's leadoff hitters had a .254 on-base percentage last season. Choo has posted a OBP of .462 out of the No. 1 spot so far.

If he keeps that up, it would be the second highest by any leadoff man in the expansion era, trailing only Wade Boggs (.476) in 1988.