A feared knuckleball pitcher (Jackie Robinson said as much), Dutch Leonard went to three All-Star Games as a Washington Senator.  For a knuckballer, Leonard had very good control, twice leading the AL in BB/9 and once and WHIP.  As a testament o his lack of walks delivered, Leonard once led the league in SO/BB, which was especially incredible considering that he was not regarded as a Pitcher who struck out many batters.

With the Senators, Leonard had a record of 118-101 with a 3.27 ERA.