London, June 20 (UNI) World number two Carlos Alcaraz said he "did not know how I'm still standing here" after battling to victory over Jaume Munar to reach the Queen's quarter-finals.
Spain's Alcaraz needed three hours and 26 minutes to beat his inspired compatriot 6-4 6-7 (7-9) 7-5 on a scorching London afternoon.
Alcaraz had two match points on his serve in the second-set tie-break but double faulted on one, and then had to come back from a break down in the decider.