Novak Djokovic overcame another rusty start to down David Ferrer in straight sets and progress to the Miami Open semi-finals.
The world number one had shown signs of susceptibility after dropping sets to Martin Klizan and Alexandr Dolgopolov earlier in the tournament - and Thursday was no exception, as Ferrer began in a flurry.
But trailing 4-1 and serving at 0-30 in the sixth game of the first set, Djokovic arrested the deficit with consummate ease - sealing a 7-5 7-5 victory.
The eight-time major winner blew his first match point in the 10th game of the second set, and Ferrer levelled at 5-5 to prolong the contest.
But Djokovic broke straight back when Ferrer was unable to return a passing shot, and the top seed showed his emotions on his way to the change of ends.
After opening up a 40-0 lead, Djokovic double-faulted - but sealed progression on match point number three to end the contest after one hour, 53 minutes.
Djokovic will face 22nd seed John Isner for a spot in the final of the ATP 1000 hard-court event.
The Serbian leads the ATP World Tour head-to-head meetings with Isner 4-2, beating him in their past three clashes - and also defeating the American twice in Davis Cup singles rubbers.