Sellers (Achilles) will begin a rehab stint with Triple-A Indianapolis this weekend, the Pittsburgh Tribune's Rob Biertempfel reports. With Sean Rodriguez and Jung-Ho Kang in the mix as utility infield options, it's not clear if Sellers will have a spot on the 25-man roster when he inevitably gets activated in the coming days/weeks. One way or another he will serve as organizational depth for the rest of the season, and would likely need an injury or two to see significant playing time at the big league level.