The 84th annual MLB All-Star Game airs from New York (Fox at 7:30 p.m.), as the Mets host the game for the first time since 1964.

SERIES PREMIERE: Or, it could be considered a returning show — just after a six-year hiatus. “Whose Line Is It Anyway?” (CW at 8), based on the wildly successful British format that lasted for eight seasons in the United States, is back with new episodes and the original cast. Ryan Stiles, Wayne Brady and Colin Mochrie play improv games with a special guest in each episode — this time, it’s Lauren Cohan from “The Walking Dead” — with ideas from the studio audience.

RETURNING SHOW: E! host Giuliana Rancic and former “Apprentice” winner Bill Rancic are back sharing their lives on camera with the Season 6 premiere of “Giuliana & Bill” (Style at 9). But this time, they have a baby to add to the mix, as their son Duke makes his TV debut.

SERIES PREMIERE: CW tries to mix up the reality dating show genre by offering a cash prize on “Perfect Score” (at 9), as two friends compete to see who can find the perfect match, based on a dozen eligible bachelors who have taken compatibility tests. In the premiere, roommates Rachel and Lacey compete against each other to find their soul mate, and the woman who chooses the most compatible guy wins the money and a date.

RETURNING SHOW: Annie has to balance her new relationship with Auggie and her professional partnership with Henry on the Season 4 premiere of “Covert Affairs” (USA at 9), and deal with the drama in the midst of looking for a person of interest in Colombia.

RETURNING SHOW: While cautiously navigating the law firm’s merger with a British company, Harvey tries to help a high-profile client who may lose her entire company on “Suits” (USA at 10); meanwhile, Mike tries to reconcile with Harvey after coming clean to Rachel about not having a law degree.

Talk show host Bill Maher is on “Late Show With David Letterman” (CBS at 11:35), along with musical guest Pokey LaFarge.

“The Tonight Show With Jay Leno” (NBC at 11:35) hosts actor Zachary Levi, racecar driver Danica Patrick and a performance by Talib Kweli featuring Nelly and Abby Dobson.

— Emily Yahr