If there were any doubts about what the Diamondbacks would do with their $6.5 million club option for closer J.J. Putz in 2013, General Manager Kevin Towers came pretty close to erasing them Friday.

Towers all but said he planned to exercise the option and bring Putz back for his third season with the Diamondbacks, news that isn't exactly surprising given how well Putz has pitched this season.

After a shaky first five weeks, Putz has been dominant, converting 21 of 22 save chances since May 15 with a 1.04 ERA. Overall, he has a 2.82 ERA and 27 saves with 49 strikeouts and just eight walks in 44 2/3 innings.

"We'll have time to make that decision, but he hasn't done anything performance-wise to lead us to believe he wouldn't be here," Towers said.