Former World Superbike champion James Toseland triumphed in the first race of the season when a last-lap crash gifted him victory in race one in Qatar.
English star Toseland was the 2004 world champion
The Englishman had dropped from the front row of the grid to 10th as he got used to his new Winston Honda, but then fought back into contention late on.
And Yukio Kagayama and Noriyuki Haga then collided to allow him to steal in.
But the 25-year-old could only finish fourth in race two as defending champion Troy Corser notched victory.
Ducati's Troy Bayliss enjoyed a consistent two races on his return to the sport after a spell in MotoGP, claiming two second-place finishes.
Pitt completed the podium places in race one, while Haga went some way to make up for his earlier disappointment with third place in the second race.
Toseland put his win down to the work done by his team despite losing most of the first day of qualifying due to rain.
"I've got my Honda to thank for that," he said. "What a great package.
"Not knowing the Honda fully yet it took me a little time to get it working how I wanted."
Toseland was surprised by the crash which gifted him the win after Haga took out fellow Japanese rider Kagayama.
"It's a big move into that tight hairpin and unfortunately they both went down," he said.
"I'm lucky to get the win in that sense."
However, Toseland's compatriot Craig Jones suffered a disastrous outing for the Foggy Petronas team.
First the Northwich ride crashed out on the opening lap of race one, before completing just six laps in race two before slipping out again to leave him in 25th spot overall.
Nottingham's Chris Walker retired on the PSG-1 Kawasaki in the first race, but completed 18 laps to finish in 16th in race two.
Losail race one result
1 James Toseland (GB) Honda 36mins 31.339secs
2 Troy Bayliss (Aus) Ducati 36:31.427
3 Andrew Pitt (Aus) Yamaha 36:33.729
4 Troy Corser (Aus) Suzuki 36:33.938
5 Michel Fabrizio (It) Honda 36:38.338
6 Alex Barros (Brz) Honda 36:46.056
7 Roberto Rolfo (It) Ducati 36:46.563
8 Pierfancesco Chili (It) Honda 36:52.522
9 Marco Borciani (It) Ducati 36:53.789
10 Max Neukirchner (Ger) Ducati 36:55.271
Losail race two result
1 Troy Corser (Aus) Suzuki 36:20.395
2 Troy Bayliss (Aus) Ducati 36:21.420
3 Noriyuki Haga (Jpn) Yamaha 36:23.857
4 James Toseland (GB) Honda 36:23.858
5 Andrew Pitt (Aus) Yamaha 36:24.745
6 Lorenzo Lanzi (It) Ducati 36:40.005
7 Alex Barros (Brz) Honda 36:40.943
8 Michel Fabrizio (It) Honda 36:41.578
9 Karl Muggeridge (Aus) Yamaha 36:43.593
10 Ruben Xaus (Sp) Ducati 36:46.928
1 Troy Bayliss (Aus) 40pts
2 Troy Corser (Aus) 38
= James Toseland (GB) 38
4 Andrew Pitt (Aus) 27
5 Michel Fabrizio (It) 19
= Alex Barros (Brz) 19