The 50-and-over sect hits the links in the latter part of July with some hot competition. The SBC Senior Open, airing on CBS, takes place July 15-21 in Chicago at the Harborside International Golf Center with last year’s champ, Dana Quigley, trying to repeat. Then follow all of the action as Larry Nelson defends his title at the FleetBoston Classic on PAX and CNBC July 22-28. Check local listings for specific times and details. — J.E.M.