By Trevor Stynes

TURIN, Italy (Reuters) -World number one Carlos Alcaraz came under extreme pressure before overcoming American Taylor Fritz 6-7(2) 7-5 6-3 in a thrilling round-robin match at the ATP Finals on Tuesday, leaving the Spaniard on two wins from two.

Last year’s finalist Fritz played the tennis of his life, as both men served up the best encounter of the season-ending championships so far, but the American ran out of steam as Alcaraz turned on the style and took the deciding set with ease.

Alcaraz and Fritz had won their opening Jimmy Connors Group matches, and the Spaniard looked in real trouble when the American took the opening set in a tiebreak. Alcaraz faced break points in the second set but rallied back to draw level.

Fritz began to tire, and Alcaraz broke to lead 4-2

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