The San Francisco Giants started the clock on the Major League career of one of their top pitching prospects, Carson Whisenhunt.

The Giants are planning to call up left-hander Carson Whisenhunt, the club’s No. 3 prospect per MLB Pipeline, to make his Major League debut in Monday night’s series opener against the Pirates at Oracle Park.

San Francisco Giants rookie Carson Whisenhunt shares an emotional response to fan support ahead of MLB debut vs. the Pirates at Oracle Park.

Carson Whisenhunt overcame a rocky start as he allowed four runs over five innings in his major-league debut, but the Giants’ losing streak hit four games as they fell to the Pittsburgh Pirates 6-5 on Monday night at Oracle Park. With Thursday’s trade deadline looming, San Francisco has lost 10 of its last 12 games.

The Red Sox also assigned catcher Ronaldo Hernández, who they signed to a minor league deal July 17, to Double-A Portland to make room for Tromp. He appeared in four games for Worcester.

The San Francisco Giants have talked with the Baltimore Orioles about acquiring outfielder Tyler O’Neil, according to sources.

New York Giants great Tiki Barber, who works with Esiason at WFAN, officially entered the fray on Monday afternoon. Barber said on his radio show that he saw Jeter in Cooperstown, N.Y, this past weekend at the National Baseball Hall of Fame ceremonies.

Its Tuesday, July 29 and the Pirates (45-62) are in San Francisco to take on the Giants (54-53). Bailey Falter is slated to take the mound for Pittsburgh against Justin Verlander for San Francisco.