New York Mets shortstop Jose Reyes is a front runner for the NL MVP at the midpoint of the season. He leads the majors with 123 hits, 15 triples and a .352 batting average. Reyes also ranks second in stolen bases (30) and runs scored (65) and first in multihit games (42). Saturday, in an interleague game against the Yankees, Reyes was forced to leave the game with a hamstring injury. How serious is it?