GOING FOR 50: The countdown is on for Carl Jackson , who has caddied in more Masters Tournaments than anyone.

Jackson would love to finish his career at Augusta National Golf Club with 50 appearances.

Jackson, who is Ben Crenshaw's longtime Augusta National caddie, will be working his 48th Masters this week and his 33rd with Crenshaw. Two of those years (1984 and 1995) were winning ones with Crenshaw.

Crenshaw's not sure how many more times he's going to play in the tournament.

"How many more does he need (to reach 50)?" Crenshaw asked Sunday. When told Jackson would hit No. 50 in 2011, Crenshaw paused and said he would play until then, "Lord willing."

Jackson first caddied in the Masters at age 14 for Billy Burke. He has missed only one Masters since -- in 2000 -- because of an illness.

"It would just be something to leave behind," Jackson said of reaching 50. "It's going to be hard for someone to do that again because caddying has changed here. Guys come out on the tour a lot older than when I started."

Jackson said he'd like to quit after 50 Masters, but it might not happen. He'll have a daughter in her second year of college in 2011.

"I might need to make every penny I can to pay for tuition," he said.

LIVE AND LEARN: Brandt Snedeker had a tough final round in the 2008 Masters, but the fact that he was in contention might help him win a green jacket one day.

"The big thing now is seeing myself winning it and visualizing that and not being afraid of doing that," he said Sunday. "I had a year to do that and realized how close I came." Snedeker opened with rounds of 69-68-70 and was two shots off Trevor Immelman's 54-hole lead. Playing in the final group Sunday, Snedeker shot 77 and tied for third place.

"I learned a lot about my emotions (that day)," Snedeker said. "I didn't play well on Sunday. I handled things pretty well considering the amount of pressure I was under. I feel like I thought well out there."

OFF THE TEE: It has been well-documented that Mike Weir had just 104 putts when he won the 2003 Masters. According to Augusta National statistics, that's the fewest by a champion in the past 14 years (Immelman needed 112 putts last year).

When Weir, who also had just one three-putt in shooting 7-under-par 281 in 2003, looks back on the win, it's not his putter that comes to mind. "My driving is what won me that tournament," he said recently. "I was in the fairway all the time, all week. And all those holes that called for a right-to-left shot off the tee, I just nailed it every single time. I think that was more key in my mind -- everybody who wins there has to putt well -- but my driving was key for me."

OLD RELIABLE: Retief Goosen's experiment with a belly putter didn't last very long -- all of four tournaments to start this season.

The two-time Masters runner-up returned to his conventional length Yes! C-Groove Tracy model in the WGC-CA Championship in mid-March and will be using it this week. Goosen won his second start with the putter back in the bag, taking the Transitions Championship on March 22 for his first PGA Tour win since 2005. Goosen made all 55 of his attempts from inside five feet.

Goosen used the Yes! putter starting in 2001, winning two U.S. Opens and four PGA Tour events.

"You always seem to go back to the clubs you like and trust," he said. "Sometimes, when you are not making anything, you need to try something else, and you try it for a couple of weeks, and if that doesn't work, then you just go back to the old one. It normally goes in a dark corner of the garage for a little bit, but it all seems to come back out pretty soon.

"I felt very comfortable going back to this putter and just changed it a little bit, put a little bit more loft on it, and that seemed to help," he said. "It seems to be behaving again." The Yes! putter was working for Goosen through three rounds of the 2008 Masters (he averaged 28 putts per round while shooting 71-71-72), but let him down in the closing test (32 putts and 76). He finished with 116 putts for the week and tied for 17th place, ending his streak of finishing third or better starting in 2005.