Second baseman Brian Roberts’ wife, Diana, gave birth to the couple’s first child Friday, a son named Jax Isaac, who weighed six pounds, seven ounces.

“Everything seems to be going well,” Showalter said. “He was up for most of the night.”

Roberts was still on paternity leave for Saturday night’s game against the Seattle Mariners, with Alexi Casilla — who is starting his first game since July 8 — taking his place in the field. Showalter said Roberts could return for Sunday’s season finale, but he wasn’t sure yet. The current plan is for Roberts to return to the Orioles on Monday and fly with the team to San Diego.

The Orioles placed Roberts on paternity leave before Friday night’s 11-8 win over Seattle. In his place, Ryan Flaherty started at second base and went 3-for-4 with a home run and a double. To take Roberts’ roster spot, the Orioles activated right-hander Steve Johnson from the disabled list.

Roberts can remain on paternity leave through Sunday, but he also has the option to return sooner. He’s batting .245 with two home runs and 15 RBIs this season.

dgallen@baltsun.com

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