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Tech titan dad caddies for teen's US Open debut

Richest caddie at US Open
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Richest caddie at US Open

Silicon Valley insider Scott McNealy is hoping for the best Father's Day weekend ever, as he caddies for his 18-year-old son at the U.S. Open golf tournament.

Maverick McNealy, an amateur, is trying to make the cut at Pinehurst in North Carolina. After the first round Thursday, he was 4 over par.

"He probably needs to shoot even [par], 1 over, 2 over, something like that to have a shot at making the cut and spending the weekend out here," Scott McNealy beamed in a "Squawk Box" interview Friday. "But no matter happens, it's an absolute blast."

The elder McNealy, co-founder of Sun Microsystems, added that Maverick's three brothers—aged 12, 14 and 16—were helping out on the driving range Friday morning before the second round.

Amateur Maverick McNealy of the United States walks with his father/caddie Scott during the first round of the 114th U.S. Open at Pinehurst Resort & Country Club, Course No. 2 on June 12, 2014 in Pinehurst, N.C.
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Maverick McNealy, a standout on the Stanford University golf team, is pursuing computer sciences in the classroom.

"The night before he did the 36-hole qualifier [for the Open] … I had to tell him to go to bed. He was working on a C++ program that was solving mazes with four different, user-selectable algorithms."

"After the qualifier last week, he had four exams at Stanford that finished at 10-o'clock Friday night. We moved him out of his dorm on Saturday. And then we took the first flight out Sunday morning to Pinehurst."

Scott McNealy, a good golfer in his own right, played at Harvard where he earned a bachelor's degree in economics. He also has an MBA from the Stanford Graduate School of Business.

The 59-year-old helped start Sun Microsystems in 1982. Nearly 30 years later, Oracle bought Sun for $7.4 billion.

McNealy said he hopes his son has a "great amateur career" and then goes on to do other things. He worried about the "gypsy lifestyle" of a pro golfer, always on the road traveling from tournament to tournament.

—By CNBC's Matthew J. Belvedere