Dobnak throws two types of fastball: A four-seamer and a sinker. He had great success with the four-seamer, ending the season with a BAA of .208 and a wOBA of .220. He was also very accurate with it, throwing 71% of them for a strike and allowing only two walks in 26 plate appearances. However, he did struggle a bit with his sinker, as batters hit .304 against it. Luckily though, only two of the 14 hits he gave up with it went for extra bases.