With his win against the Cubs last Friday, the D-backs ace joined Randy Johnson, Curt Schilling and Brandon Webb in accomplishing the feat, and the start also pushed him over the 200-inning mark for the second straight year.
"To be in that company, it means a lot," Kennedy said after limiting the Cubs to three runs on four hits in 5 2/3 innings. "Those are three great pitchers. It's an honor to be mentioned in the same breath and to be in that history of the Diamondbacks. Fifteen wins anywhere is an accomplishment."
Kennedy (15-11, 4.16 ERA) finished September undefeated in five starts, posting a 3-0 record with a 3.58 ERA. Wednesday will mark Kennedy's 33rd start of the year, matching the season-high he set in 2011.
While Kennedy's spot is locked in Arizona, he'll face off against a pitcher trying to earn his stay in the rotation.
Rockies lefty Jeff Francis, who joined the club in June after starting the year in Triple-A with the Reds, has had his fair share of struggles this season.
It took Francis five starts to earn a win, and his ERA has only crept below five at two brief points during the season. But on the whole, the 31-year-old southpaw has pitched relatively well.
In 23 starts this season, Francis has lasted at least five full innings 15 times, including one stretch of nine in a row. He's had a rough go his past two outings, exiting after four innings in each, while giving up a combined seven runs and 11 hits.
"I feel like I'm better than the way I performed, so I'm somewhat disappointed," Francis said after a loss to the Dodgers on Friday. "I'm stepping on the mound, ready to pitch, but sometimes it didn't go my way."
Francis will have one more shot to prove his worth this season. He is a free agent after the season and is hoping to re-sign with Colorado.
Rockies: Tulowitzki officially done for season
Rockies shortstop Troy Tulowitzki finished up his 2012 season on Tuesday in the Arizona Instructional League, and opted against trying to play with the Rockies in the final game of the regular season.
Tulowitzki, who suffered a groin injury in late May, played seven innings Tuesday to wrap up his 2012 campaign.
He had surgery on the groin in June, and finished the year batting .287 with eight home runs and 27 RBIs in 47 games.
With his home run off Wade Miley on Monday night, catcher Wilin Rosario broke the Rockies rookie record for home runs in a season with 28.
The 28 homers are the fourth-most in a single season by a rookie catcher, and adds to his already lofty set of rookie records this year.
Rosario leads all National League rookies in home runs, RBIs (71) and slugging percentage (.533).
D-backs: Goldschmidt close to 20-20 season
D-backs first baseman Paul Goldschmidt is just two stolen bases away from a rare 20-20 season.
He would become the sixth player in franchise history to reach the 20 home run, 20 stolen base mark in a single season.
Godschmidt, who swiped just four bases in his rookie season a year ago, missed three games last week with a sore back, but cranked his 20th home run on Monday in his first game back. He went 0-for-4 Tuesday night and will need two stolen bases Wednesday to accomplish the feat.
D-backs reliever Brad Ziegler has racked up 21 double plays on the season, matching the most by a reliever since the Orioles' Doug Sisk in 1988.
Ziegler, who induced a double play in the ninth inning Monday, has appeared in 77 games this season, holding a 2.53 ERA in 68 innings, averaging out to one double play just less than once per three innings pitched.
Monday's win snapped the Rockies nine-game road losing streak, but Tuesday's loss marked Rafael Betancourt's seventh blown save of the year and second in as many days.
The Rockies will look for their 14th series win of the year in the season finale.
Justin Upton's 107 runs scored give him the fourth-most in club history, surpassing Luis Gonzalez's 106 set in 2000. Upton trails Tony Womack's mark of 111 set in 1999 and Gonzalez's 112 runs from 1999.