Two-time major winner Andy Murray was happy with his output, despite being bundled out of the Citi Open by Teymuras Gabashvili.
Andy Murray said his return game failed him in the key moments, in his first-round loss to Teymuraz Gabashvili at the Citi Open.
Top seed Murray served for the match in Washington DC but succumbed to a 6-4 4-6 7-6 (7-4) loss to the world number 53 - in what was the Briton's first ATP World Tour appearance since losing to Roger Federer in the Wimbledon semi-finals.
Murray said he felt his performance was commendable, despite failing to adapt to the conditions in his first match on the US hard-court swing.
"I normally back myself to return a little bit better than I did," Murray said via ATPWorldTour.com.
"I think in the tie-break I don't think I put one return in the court when he was serving. I feel like I didn't do a good enough job of putting enough first-serve points in the court.
"It's obviously a disappointing match to lose but it wasn't like I was blown off the court in a match that I had no chance of winning.
"I feel like I put myself in a position to win the match.
"It was the first hard-court match for four-and-a-half months with only four or five days of preparation so I was happy with how I moved and did certain things on court.
"But there are some things for me to improve and hopefully with a few more days and having that match under my belt I'll be able to make some improvements for the next few weeks."
Gabashvili, meanwhile, spoke of his newfound confidence on tour, having turned professional in 2001 but registering his only win over top-five opponents in each of the past two seasons.
"I'm confident now and for sure this helped me in this match and also in the first round against Benjamin Becker, which was really difficult," the top-ranked Russian said.
"I knew if I just played confident and try my weapons and let's see how it goes and it went to my side.
"The past three years I've become more confident in my play.
"Last year it was the best year in my career and this helped me to improve more this year."