There will be a second green jacket awarded in a five-month span on Sunday, but even as Round 4 at the 2021 Masters begins, we’re not sure who will be be honored by 2020 champion Dustin Johnson at the tournament’s end. Hideki Matsuyama (-11) took a commanding four-shot lead after a stellar effort on Saturday, but he’s no shoe-in to go the distance given those in his rear-view mirror.Chief among them is a solid group at 7 under, including 18- and 36-hole leader Justin Rose. Then you have 2015 Masters champion Jordan Spieth lurking six back, and while it would take a Matsuyama collapse for Spieth to have a chance, it’s not like we haven’t seen that happen before on Sunday at Augusta National.Watch the 2021 Masters streaming now with Masters Live as we follow the best golfers in the world throughout Augusta National with Featured Groups, check in at the famed Amen Corner and see leaders round the turn on holes 15 & 16. Watch live free on CBSSports.com and the CBS Sports App. Also available on Paramount+.CBS Sports will update this story with scores and highlights from the Masters below. Check out the live scores at the top of this story, a more detailed leaderboard, Round 4 tee times and our complete viewer’s guide.