Leake, 27, will be a free agent at the end of the 2015 season. He was traded to the Giants from the Cincinnati Reds on July 30, a day before the MLB trade deadline. Since he arrived in San Francisco, he has a 2-5 record with a 4.07 ERA. He also missed much of August with a hamstring injury. However, he made his strongest start as a Giant on Wednesday, pitching a complete game, two-hit shutout against the Dodgers.
San Francisco will lose veteran starter Tim Hudson to retirement this offseason, and are also reportedly interested in re-signing free agent Tim Lincecum. The Giants, last year's World Series champions, were eliminated from playoff contention on September 29.
The Diamondbacks scored the second most runs in the National League (700), but have only the eighth best team ERA (3.96).
- Jeremy Layton