Heston was optioned to Triple-A on Friday, Amy Gutierrez of CSN Bay Area reports. Heston spent all of 2014 at Triple-A, posting a 3.38 ERA with 125 strikeouts over 173.0 total innings. He'll once again begin the season in Fresno in hopes of receiving a call-up at some point.

Heston allowed three runs on six hits and two hits while striking out two in four innings in the Giants' 9-3 win over the Padres on Sunday. It's Heston's first career start after pitching 1.1 innings in two appearances earlier this month. The 26-year-old pitched for Triple-A Fresno before being called up to pitch Sunday. He threw 77 pitches in the outing.

Heston has been announced as the starting pitcher for Sunday's game against the Padres, CSN's Andrew Baggarly reports. Heston will get the nod with the Giants wanting to save their five regular starting pitchers for the postseason. Heston posted a 3.38 ERA and 125:51 K:BB ratio in 173 over 28 starts with Triple-A Fresno this season.

Heston will have his contract purchased from Triple-A Fresno on Sunday. Heston already has a career-high 173 inning under his belt this season at Triple-A Fresno, over which he's posted a 3.38 ERA, 1.17 WHIP and 125:51 K:BB ratio. He'll serve as bullpen depth for the Giants down the stretch, and could be considered in an emergency spot start scenario.

Giants re-signed RHP Chris Heston; assigned him to Triple-A Fresno. Heston was just released on Tuesday but has agreed to return to the organization. The 25-year-old has posted a 5.80 ERA and 1.61 WHIP over 19 starts at Fresno this season.

Giants released RHP Chris Heston. Heston had been designated for assignment earlier this month. The 25-year-old will now look to catch on elsewhere.

Giants designated RHP Chris Heston for assignment. The move was made on Saturday in order to clear room on the 40-man roster for Jeff Francoeur. Heston has had a miserable year at Triple-A Fresno, posting a 5.80 ERA and 1.61 WHIP over 19 starts.

Chris Heston's miserable spring continued on Friday as he was torched for five runs on five hits in just four innings of work against the Rockies. Heston also walked three while striking out two on the afternoon. He's the proud owner of a 9.28 ERA, 1.69 WHIP and 5/4 K/BB ratio through 10 2/3 innings this spring. The 24-year-old posted gaudy numbers at the Double-A level in 2012, but isn't close to securing a spot in the Giants rotation any time soon.