That too. Twice a break up in the first and third sets. With a little better serve he would have win this in straights.
Yeah, it's hard to feel in control of a match or make use of momentum I think when you're struggling all the time on serve. But at least he couldn't have gotten too much down on himself, keeping the match close.
Maybe one thing to consider for David to do would be to use more of the three-quarter pace kick serves out wide, a higher percentage play if he's having to resort to second serves too much.