Marco Estrada, SP, Milwaukee Brewers

• Last 2: 1 ER, 6 H, 11 K in 14 IP

Estrada a peripheral heartthrob

The Brew Crew is going with a youth movement in its quintet. Estrada's drool-inducing peripherals (9.51 K/9, 1.92 BB/9) are backed up by a normal 71.7 left-on-base percentage and a healthy 10.1 swinging-strike percentage. He's a tantalizing talent worth riding the rest of the way.

Homer Bailey, SP, Cincinnati Reds

• Last 3: 3.54 ERA, 0.98 WHIP, 18 K in 20 1/3 IP

Most are probably grabbing Bailey for his Friday effort versus the Houston Astros, but they might not have noticed his good run of late, including his last outing, coincidentally versus the Astros. Some thought Bailey was fatigued until this stretch. Maybe he still is, but recently, he's leaned on his changeup and two-seamer more; in those 20 1/3 innings, he has just one walk.

After the 'Stros, Bailey lines up to face the Pittsburgh Pirates and, looks like, the Chicago Cubs and Milwaukee Brewers. Not a bad setup, so he could serve as more than a rental.

Tyler Colvin, 1B/OF, Colorado Rockies

• Last 26: .326 BA, 15 R, 4 HR, 20 RBI, 5 SB in 102 PA

A veteran of this space, Colvin has exploded this season into a mixed league asset. Coors Field, innate power skills, maturing plate discipline and approach - he actually might still be available in your league.

Rickie Weeks, 2B, Milwaukee Brewers

• Last 41: .312 BA, 34 R, 7 HR, 18 RBI, 6 SB in 176 PA

Weeks crippled many fantasy teams in the first half and was dropped by many of them. His last month-plus has reminded folks how potent he can be on a streak, and he's 9-for-26 to start September; he's probably finally over the lingering effects from his 2011 ankle injury that clouded his spring performance.

He'll be a risky proposition for 2013, but he's close to power-speed gravy for the next few weeks.

Hisashi Iwakuma, SP, Seattle Mariners

• Last 9: 5 W, 1.74 ERA, 1.11 WHIP, 53 K in 57 IP

Six of those fell under the textbook definition of quality starts, and the most runs he gave up in any of them was three (twice). The crafty southpaw has proved to be more than just a matchup start, and though he'll probably be overvalued in next year's drafts, he's a solid lineup force now.