Jim Underdahl Racing Qualifying Report 2011 NHRA FULL THROTTLE DRAG RACING SERIES Pro Stock Motorcycle Round 2 of 16 24th annual O'Reilly Auto Parts NHRA Spring Nationals Royal Purple Raceway BAYTOWN, Texas (April 30, 2011) Wearing the banner of local Houston motorcycle retailer Stubbs 59 Powersports, Pro Stock Motorcycle rider Jim Underdahl snagged the No. 9 spot in the PSM ladder of this weekend's 24th annual O'Reilly Auto Parts NHRA Spring Nationals at Royal Purple Raceway in Baytown, Texas.