Manager Jim Tracy said that he was thrilled with Brothers' performance on Monday night -- though he walked two, the left-hander gave up just one hit and struck out Kelly Shoppach and Ike Davis, earning his seventh win of the season in the process.
"His delivery last night was much smoother," Tracy said. "He was pitching last night, you could tell by the way he was throwing the ball. He was in that situation where he wasn't reaching for more and more, and as a result, he did a much better job."
Tracy said that Brothers wouldn't be available to come in for extended relief, but would certainly be an option against a left-handed hitter.
Brothers was also brilliant in his previous outing when he struck out three over 1 2/3 innings against Miami without allowing a hit.
The improvement, Tracy said, reminds him of two staples in the Rockies bullpen.
"I personally feel that Rex Brothers is slowly but surely developing a very similar mentality that Matt Belisle and Rafael Betancourt have, which is basically, 'Unless I tell you that I can't pitch, I can pitch,'" Tracy said. "You really, really respect and appreciate that."
Belisle -- an All-Star candidate this season -- had struck out 53 batters over 62 1/3 innings entering Tuesday. Betancourt, meanwhile, has already logged a career-high 24 saves -- accounting for more than half of Colorado's 47 wins.