Jack Sock is never afraid to go for it—be that on his huge serve, blistering forehand or creative post-match celebration.

On Wednesday, the American narrowly escaped defeat against Malek Jaziri in the fourth round of Indian Wells, 4-6, 7-6 (1), 7-5.

It's his second epic battle is as many rounds as Sock saved four match points during his 3-6, 6-3, 7-6 (7) upset of Grigor Dimitrov in the third round.

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Sock is embracing the Californian desert after spending a combined time of five hours on court in his last two matches.

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The world No. 18 will face Kei Nishikori for a spot in his first ATP Masters 1000 semifinal.