Keller pitched nine shutout innings against Bowie in the first round of the Eastern League playoffs Thursday. He gave up just one hit and two walks, striking out four.
The 21-year-old compiled a 3.03 ERA, 1.00 WHIP and 116:32 K:BB in 116 regular-season innings split between three levels in 2017. With a fastball that sits in the mid 90s and a 3.85 K/BB rate for his career, Keller continues to exhibit promise. He figures to start the 2018 campaign in Double-A with a chance to advance midseason.