Star sightings: Anthony Rizzo, Jimmy Butler, Joe Maddon

SEEN ON THE SCENE: Four Cubs players were in the house at Second City the other night — including Anthony Rizzo, Kris Bryant, David Ross and John Lackey — having fun with the both the Second City e.t.c. cast of “A Red Line Runs Through It” and the mainstage troupe’s “Fool Me Twice, Deja Vu.” Recently, the e.t.c. cast and crew threw out the first pitch and sang the 7th inning stretch at the Cubs-Padres game at Wrigley Field. … Those Cubbies obviously love to par-tay! Rizzo, Lackey, Jon Lester, Jake Arrieta, Dexter Fowler, Travis Wood and Ryan Dempster all had a blast singing karaoke at Stanley’s Kitchen & Tap last weekend. … Speaking of the Cubs, manager Joe Maddon was spied getting his sushi fix at Jellyfish on Rush, where he’s become something of a regular. … The Bulls’ Jimmy Butler made the scene at Fabio Viviani’s Siena Tavern — joined by a group of pals, but not doing his usual reverse dining bit, having his dessert first. That night, Butler skipped dessert altogether! … Fans spotted the Bulls’ Pau Gasol dining with Jerry Reinsdorf at Joe’s Seafood, Prime Steak & Stone Crab. … Separately, John Paxson, Gar Forman and Fred Hoiberg were seen dining at Joe’s. … The name of the film and even the movie studio is hush-hush, but Paskal Rudnicke Casting is holding an open casting call for child actors and actresses, from 11 a.m. to 4 p.m. Saturday at its offices at 10 W. Hubbard, Suite 2-N. Here are the specifics of the kids needed: A girl, ages 13 to 16, who can be believable portraying a 14-year-old. The young lady needs to be biracial to play a role described as “troubled and belligerent, [but] possessing of a great untapped strength and intelligence.” Another role calls for a boy (also biracial, but ages 5 to 7), described as extremely intelligent and articulate, “like a well-read college professor, trapped in the body of a 5-year-old.”