Tiger Woods and his teen son Charlie ended day one of the PNC Championship in a three-way tie for first with a score of 13-under-par.
Teams Langer (Bernhard and Jason) and Singh (Vijay and Qass), who both also carded 13-under 59s, are locked in at equal scores with Team Woods, with the legendary golfing family managing five straight birdies down the stretch in Orlando, Florida.
The PNC event is Tiger's first competition since surgery on his back in September; his sixth in 10 years.
Following the round, Tiger told reporters: "It's a scramble, so we're trying to pull off each and every shot for each other, and to ham-and-egg, and I think we did that great pretty much the entire day.
"Charlie made pretty much most of the putts today."
Charlie added: "I didn't hit it great, but Dad saved me on a couple of them and I rolled them in."
Team Lehman (Tom and Sean) and Team Harrington (Padraig and Paddy) are tied for fourth on 12-under, one shot ahead of Team O'Meara (Mark and Shaun), and two shots ahead of Team Kuchar (Matt and Carson) and Team Annika (Annika Sorenstam and Will McGee).
The tournament concludes on Sunday.
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