Some call Red’s a sports bar. And sure, they do have plenty of sports memorabilia — old photos and the like —adorning the North Falmouth spot’s walls and chicken wings and hot dogs on the menu. But the Sea Crest Beach Hotel’s year-round restaurant has deeper roots in the athletic community thatn that. Red’s pays warm tribute to its original co-owner, Red Auerbach, the one-time Celtics coach and president. Auerbach’s family donated the aforementioned sports mementos, including a collection of vintage letter openers and a saucy little bottle opener in the shape of a nude siren.