Los Angeles: South Africa's Kevin Anderson rallied from a set down to edge out Bulgarian prospect Grigor Dimitrov 2-6 7-6 7-6 in a compelling first round encounter at the San Jose Open in California on Monday.

The sixth-seeded Anderson was no match for his 20-year-old opponent in a one-sided first set in which he was broken twice, but the South African used his big serve to good effect to grind out victory in a little under two-and-a-half hours.

Both players held serve for the reminder of the match but Dimitrov blinked first in the second set tiebreaker when he committed a costly double fault to fall 4-2 behind before Anderson tied the contest with one of his 15 aces.

Anderson, who staved off three break points at the start of the third set, finally took control of the contest in the deciding tiebreaker and closed out the contest on his second match point.

In the day's only other singles match, Germany's Tobias Kamke defeated South African Izak Van der Merwe 6-3 6-3. French world number 13 Gael Monfils is the top seed.