The Indians held voluntary batting practice before their 12:05 p.m. game against Oakland on Thursday.

They then held mandatory BP against right-hander Bartolo Colon.

Tribe hitters, all but tripping over themselves to get to the box against Colon, flexed repeatedly in a 9-2 victory at sunny Progressive Field before a paid attendance of 12,477.

Indians left-hander Scott Kazmir gave up one run on five hits in six innings. He struck out 10 -- the 18th double-digit strikeout performance of his career and first since Aug. 26, 2009, at Toronto.

Kazmir (2-1, 4.87 ERA) won his second straight start. Given where he stood last year, it qualifies as a bonanza. Kazmir signed a minor-league free agent contract with Cleveland in January after pitching in the Atlantic League and Puerto Rican Winter League in 2012.

The Indians (18-14) swept the four-game series. They have won 10 of 11 entering a three-game set against the first-place Tigers in Detroit.

Oakland, still smarting from a controversial loss Wednesday, slipped to 18-18.

Colon pitched for the Indians from 1997-2002. He had not worked in Progressive Field since May 18, 2005, when he earned a 2-1 victory as a member of the Angels.

Opponents know what they are going to get against Colon: a steady diet of fastballs. Colon is not on the mound to finesse or trick anybody. The Indians did, indeed, see the heaters -- and knew what to do with them. Colon (3-2, 4.57) gave up six runs on eight hits in four innings.

The Tribe took a 2-0 lead in the first. Michael Brantley led off with a single and scored on Jason Kipnis's two-run homer to Angel Hernandez Alley in left-center. The ball went over the wall near where Oakland's Adam Rosales hit one with two outs in the ninth inning Wednesday night -- only this time it counted as a four-bagger.