Athletics manager Mark Kotsay indicated Friday that the club is looking to sign Rooker (forearm) to a contract extension, Martin Gallegos of MLB.com reports.

Athletics general manager David Forst revealed Friday that Rooker underwent right forearm extensor surgery Tuesday, Martin Gallegos of MLB.com reports.

Rooker went 1-for-4 with a two-run home run and a walk in an extra-inning loss to the Mariners on Saturday.

Rooker went 2-for-3 with an RBI infield single, a stolen base and a walk in a win over the Cubs on Wednesday. He was also caught stealing on another attempt.

Rooker went 1-for-4 with a two-run home run in a loss to the White Sox on Sunday.

Rooker went 3-for-5 with a two-run single and a run in a loss to the White Sox on Saturday.

Rooker went 1-for-4 with a solo home run and a stolen base in Thursday's 6-3 loss to the Astros.

Rooker went 2-for-5 with two home runs and four RBI in Thursday's 6-4 loss to the Mariners.

Rooker went 2-for-4 with a double, an RBI and a stolen base in Saturday's 3-2 loss to the Rangers.

Rooker went 1-for-5 with a solo home run in a win over the Reds on Wednesday.