Manager Derek Shelton's contract was extended by the Pirates after the team's 14-7 start -- its best since 1992.

Shelton's contract was set to expire after the season. The Pirates announced the new deal Saturday but did not specify a length.

"It shows what we're doing and how we're doing it is working," Shelton said.

The Chicago White Sox have signed veteran outfielder Stephen Piscotty to a minor league contract and assigned him to Triple-A Charlotte.

The signing was announced before the White Sox's game at the Tampa Bay Rays on Saturday.