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8/21/2014 5:50 P.M. ET

Belt, Sanchez may return before end of season

CHICAGO -- Giants manager Bruce Bochy did not rule out the possibility of first baseman Brandon Belt and catcher Hector Sanchez playing again before the season ends. But, Bochy added, a program heavy on baseball-related activities must be organized for both players, who are recovering from post-concussion symptoms.

Belt and Sanchez probably will need approximately three weeks' rest after recent incidents worsened their conditions.

"That's a lot of time without playing in a game," Bochy said Thursday.

Minor League injury rehab stints won't be in either player's future, since the farm teams end their schedules in early September. More than likely, Belt and Sanchez will spend at least some time at the Giants' training facility in Scottsdale, Ariz., where they can immerse themselves in their recovery.

Worth noting

• Right-hander Tim Hudson, the Giants' scheduled starter for Friday's series opener at Washington, took off for the nation's capital in early afternoon.

"It's just to make sure he gets his rest," Bochy said Thursday, noting that the Giants were bound to arrive in Washington in the morning's wee hours even if the teams avoided rain delays -- which didn't happen.

• Right-hander George Kontos arrived from Triple-A Fresno to serve as the Giants' extra player for Thursday's regularly scheduled game, which was treated as the second half of a doubleheader. Teams are allowed to expand their rosters to 26 players for twin bills.

• Jake Peavy assembled a unique pitching line in Wednesday's 8-3 victory over the Cubs: seven innings, 10 hits, two runs, no walks and eight strikeouts. According to the Elias Sports Bureau, he became the first Giants starter to allow two or fewer runs while yielding a double-digit hit total, walking none and striking out at least eight since Juan Marichal did so in a complete-game, 7-1 triumph at Philadelphia on April 23, 1968. Both thrived with runners in scoring position. Chicago went 1-for-6 off Peavy in those situations; Marichal held the Phils to 0-for-9.

Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.