Monday, May 7, 2012
David Robertson’s Heat Maps
Although there really isn’t a lot of data on Robertson to this point in the season, I do think his pitch location is worth noting. He seems to be nailing that outside edge vs. LHB consistently.
However, it’s right handed batters that are really coming up empty against Robertson this year; he’s faced 21 RHB and struck out 11 of them.
David Robertson vs. RHB
Robertson has thrown 106 cutters this season, recording nine strike outs and yielding five hits in 22 plate appearances. Batters are chasing the pitch out of the strike zone at a rate of 26.7%. Last season, his chase% on cutters was 19.3%.
Similarly, his fastball is getting batters to chase 31.4% compared to 20.3% between 2008 and 2011. Robertson has recorded eight strike outs on his fastball this season while giving up two hits in fifteen plate appearances. He’s actually relying on his cutter more as he’s thrown only 74 fastballs to this point. His cutter and fastball come in at roughly the same velocity (92.7 MPH and 93.0 MPH respectively since 2011). Batters might be finding it difficult to identify between the two pitches, resulting in his fairly high strike out rate to this point. I remember Russell Martin mentioning last season that Robertson’s cutter explodes at the end, much like Mo’s.
Robertson only started throwing the cutter last season; I can’t help wondering what part Mariano may have played in helping him develop the pitch.