SAN FRANCISCO -- In a move that Giants manager Bruce Bochy described as a "swapping out" of outfielders, the Giants recalled Jarrett Parker from Triple-A Sacramento and optioned Mac Williamson to the same club Monday.
Bochy explained the move was largely driven by the organization's desire to further Williamson's development by providing more playing time for the Giants' No. 7 prospect as ranked by MLBPipeline.com.
"It's not because of yesterday," Bochy emphasized, referring to Williamson's 0-for-3, three-strikeout performance in Sunday's 2-0 loss to Colorado.
That game dropped Williamson's batting average to .231 (3-for-13) during his second stint of the season with the Giants. Overall, the 25-year-old is batting .188 (3-for-16) in the Majors this year.
Parker, 27 and ranked as the Giants' No. 18 prospect, was batting .216 in 27 games with Sacramento. He also had nine home runs and 23 RBIs, reflecting his power and run-production potential.
• Parker on MLB Pipeline's Prospect Team of the Week

"You saw what he could do last year," Bochy said of Parker, who hit six homers in a nine-game September span for the Giants. That included a three-homer binge at Oakland on Sept. 26.
Parker also hit three home runs for Sacramento at Salt Lake City on May 1, when the Giants dipped into Triple-A to reinforce their outfield depth. But they summoned Williamson instead. Asked about that Monday, Parker replied, "I try not to look into things. That's not how it works."