It was the first time the 15-time major champion had teed it up at Augusta National following the revelations about his private life.
At the time of writing, the latest bid for the shirt is $44,000. A signed Woods glove worn at the 2010 U.S. Open has a current bid of $1,000 while one of his old Nike putters has a current bid of $5,000.
As for Lefty, he has recorded a short video talking about the flat stick to confirm its authenticity.
They certainly look pretty cool. Mickelson's putters are unlikely to eclipse the money paid for a set of irons Woods used during his Tiger Slam era.
Those sold for $5.1m in April.
Before Mickelson was suspended by the PGA Tour for joining the LIV Golf League, he had won 45 PGA Tour events.
Mickelson's equipment in 2023?
We are expecting to see more changes to Mickelson's bag in 2023.
Mickelson has been filmed this year tinkering with lots of different pieces of equipment.
At LIV Golf's Invitational in Portland, he was spotted using this Armlock putter.
Mickelson's deal with Callaway is still on pause. The OEM put their long-term partnership on hold following his famously controversial remarks about working with Saudi Arabia.
At the time, the a spokesman for Callaway said:
Equipment: Best range finders 2022