Dayan Viciedo worked out at third base before Monday night's game. Viciedo employing a leg kick at the plate has been a similarly infrequent sight. The leg kick has been as rare as Viciedo's production, although he hit a broken-bat RBI single off Mark Buehrle in the first inning for his first hit with runners in scoring position this season. "It seems like he goes in and out of that," White Sox manager Robin Ventura said of the leg kick that was introduced to Viciedo this winter. "The adrenaline of the at-bat, sometimes it's not a natural feel for him, so he doesn't do it all the time. "It's part of the rub right now. He has to find something that's consistent to make hard contact. You're trying to find it. But if you don't stay with it, it's harder to stay consistent." Viciedo, who began his professional career at third, and backup catcher Hector Gimenez took grounders before the game. But bench coach Joe McEwing said Viciedo was "just out there having fun." Gimenez started fielding grounders last week in Washington in case of an emergency. Heavy hearts: Several Sox players learned before batting practice of the explosions at the Boston Marathon.