Andy Murray won a deciding set for the seventh time this season to reach the second round at Indian Wells.
The British former world number one defeated Tomas Etcheverry 6-7 (5-7) 6-1 6-4 in a match that lasted three hours and 12 minutes.
Murray had no fewer than 20 break points, 16 of which were saved by the 23-year-old Argentine.
"I really felt like I was in the driving seat for much of the match," Murray told BBC Sport.
"I was creating lots of opportunities but I just wasn't able to capitalise. I made some poor decisions at times, but in the end did really well to get through that.