He won the tournament in 2009 and 2010 before missing last year 's event because of a right elbow injury .
Querrey has now won 13 consecutive matches in the event , which is held on the UCLA campus .
Querrey won the tournament in 2009 and 2010 before missing last year 's event because of a right elbow injury .
Querrey has now won 13 consecutive matches in the event , which is held on the UCLA campus .