Isaac Mattson

Right-handed pitcher · PIT · 38 appearances · 38.2 innings

Not on today's probable starters. This page updates every hour.

4.40
SIERA
5.35
ERA
20.4 %
strikeout rate
10.2 %
walk rate
1.60
WHIP

His ERA and his SIERA disagree by 0.95. The ERA is the harsh one — he has pitched better than his run prevention shows. SIERA is built from strikeouts, walks and contact, so it settles far faster than ERA does.

Against left-handed and right-handed batters

His two sides rest on 38.2 innings this season — too few to read as a trait. The numbers below are his; the conclusion is not.

xFIPK%BB%K-BB%HR/9
vs left-handed batters5.3518.5 %12.0 %6.5 %0.92
vs right-handed batters4.1122.6 %8.3 %14.3 %0.47

xFIP rather than SIERA by hand: FanGraphs does not publish SIERA in its splits. The two describe the same thing and correlate at about 0.95.

Tonight's bullpen report →