**The United Rugby Championship has new leaders after Ulster climbed to the summit with a 32-12 victory over Connacht in Belfast on Friday night.** The result lifted them two points clear of Edinburgh, who have played a game less, while there was also movement in the South African Shield over the weekend. A 20-10 win for the DHL Stormers over the Cell C Sharks saw them replace their visitors at the top of the pool, and the Vodacom Bulls are closing in following back-to-back victories over the Emirates Lions. The weekend also saw the first round of Guinness Six Nations action take place, with plenty of stand-out performances from URC players to enjoy. Here are five things we learned.