Some numbers to note from the Shell and Pennzoil Grand Prix of Houston, the 17th and 18th races of the 19-race IZOD IndyCar Series season:

2 - Drivers who led both races at Reliant Park: Will Power and Scott Dixon

4 - Consecutive top-five finishes for Justin Wilson, to vault to fourth in the standings.

13 - Consecutive top-10 starts by Will Power.

18 - Positions improved by Graham Rahal over both races, the most gained by any driver.

20 - Wins for Will Power in his Indy car career, tying Earl Cooper for 21st on the all-time list.

33 - Wins for Scott Dixon in his Indy car career,  most be any active Indy car driver.

74 - Points gained by Scott Dixon during the doubleheader races. Dixon leads Helio Castroneves by 25 points in the IZOD IndyCar Series standings.

94 - Wins as a car owner by Chip Ganassi, which ranks third all-time among Indy car team owners.

156 - Consecutive Indy car starts for Scott Dixon dating to the 2004 race in Michigan. Dixon ranks seventh on the all-time list.

214 - Consecutive Indy car starts for Tony Kanaan dating to the 2001 CART race in Portland, extending his Indy car record.