This article is part of our Regan's Rumblings series.
September 1 roster expansion is upon us, and while that doesn't necessarily mean that all teams will call up their top guys from Triple-A, help is coming. Service time considerations, 40-man roster issues, and, for pitchers, workload concerns all factor into the decision as to whether guys get called up. I struggled to find one impact guy for all 30 teams, but here is a list of one guy per team who should get the call and help next month.
Arizona Diamondbacks – Domingo Leyba, SS/2B – I'm not sure where they'd play him, but Leyba seems likely to be back up next month and he can certainly hit, going 3-for-9 with Arizona earlier this year, and he's hitting .307/.355/.529 for Triple-A Reno, though lots of guys can hit at that elevation, and he won't help on the base paths.
Atlanta Braves – Austin Riley, OF/3B – I don't think the Braves will recall Drew Waters or Cristian Pache, but Riley will be back. Riley got off to a blazing start with the Braves, but then hit just .197 in his final 157 at- bats before getting hurt. With guys like Nick Markakis and Ender Inciarte nursing various injuries, Riley could get sufficient time to re-establish himself.
Baltimore Orioles – Ryan Mountcastle, OF/1B – Mountcastle is not on the 40-man roster, but it can't be too tough to find a guy who is that can be DFA'd. Mountcastle is hitting .310/.342/.531 in Triple-A, including 25 home