Aroldis Chapman's time is now

Aroldis Chapman will be a huge boon for the Reds this fall. Getty Images

September means roster expansion; this typically equates to 'more arms' -- and every year, a handful of players prove enough to stick around come October (remember Francisco Rodriguez in the 2002 playoffs?). Here are 10 potential September call-ups -- all associated with contenders -- who could stick around into the postseason.

Jonathan Albaladejo, RHP, New York Yankees (Triple-A Scranton/Wilkes Barre)
The 27-year-old Puerto Rico native has a career ERA of 4.80 in 41 appearances for the team over the past three seasons. Not good, right? That pitcher, though, is a very different player than the current incarnation; Albaladejo has all but scrapped his sinker in favor of a pure four-seam heater that sits at 92-94 mph while touching 96. He's been one of the best relievers in the minors this year; he's already established an International League record with 40 saves to go with a 1.35 ERA while striking out 76 over just 60 innings. He won't be on the playoff roster, but September could be a springboard to a more realistic shot at a job next spring.