Fitzpatrick overhauled defending champion Eugenio Chacarra of Spain, who was four shots clear going into Sunday’s final round in New Delhi, to win by two shots
Back-to-back bogeys at the third and fourth did not help the Englishman’s cause but Chacarra’s tee-shot found the water at the eighth, leading to a bogey and a two-shot swing as Fitzpatrick made his birdie.
Both players birdied the ninth to turn with Chacarra three shots ahead, half of what his lead had been on the sixth tee.
Fitzpatrick bogeyed the 10th but birdied the next three, while Chacarra responded at the 13th to stay in front before missing a birdie chance at the 14th.
But things turned from the 15th as the Spaniard found a bunker off the tee to start a run of three consecutive bogeys and Fitzpatrick’s birdie gave him the lead.
Fitzpatrick birdied the 17th to go four ahead and played the par-five 18th cautiously with a double-bogey seven still enough for victory.