Scores were low during the opening round of the Memorial Tournament, but no one was able to keep pace with Dustin Johnson. Here's how things look at Muirfield Village Golf Club, where Johnson holds a slim advantage with the world No. 1 lurking just off the pace:
Leaderboard: Dustin Johnson (-8), Brendan Steele (-7), Jason Day (-6), Matt Kuchar (-6), David Hearn (-6), Danny Lee (-6), Hudson Swafford (-6)
What it means: Johnson hasn't won yet this season, a rarity for him, but he had recent close calls in both Houston and Augusta.