He was named an All-American in 1980 and won nine Big Ten track and field championships both as an individual and relay race team member.
He was also a member of relay teams that hold numerous U-M and Ferry Field all-time records.
[2] In 1977, Woolfolk was first-team All-State in American football and set Westfield High School season records with 1,637 yards rushing, 34 touchdowns and 206 points.
[3] He played college football at the University of Michigan (1978–1981) where he led the Wolverines in rushing three straight years, 1979, 1980, and 1981.
[4] He finished his career as the school's all-time leading rusher with 3,861 yards, a record that was eclipsed six years later by Jamie Morris.
[4][5] Woolfolk now ranks fifth in career rushing at U-M, as shown in the following chart:[5] He began the 1981 season with five consecutive 100-yard games, including a 253-yard effort.
After the game, Coach Bo Schembechler said: "I wondered what a kid like that would do if he ran as much as the guy on the West Coast (Marcus Allen).
"[8][9] After winning his second MVP trophy in 1981's Bluebonnet Bowl, Woolfolk said: "I might look back in later years and notice that, but right now all I can think about is that I've worn a Michigan uniform for the last time.
[13] Through the 2007 season his 1980 outdoor 200 meter time of 20.59 seconds remains the all-time University of Michigan record.
His 1980 outdoor 100 m time of 10.36, which is now the fourth fastest in Michigan history was once the school record, and his indoor 300 meter (event retired) time of 30.38, which is now the second fastest in Michigan history was also once a school record.
[17] He was a versatile player who accumulated nearly 5,000 all-purpose yards and had seven 100-yard games, five as a receiver out of the backfield and two as a rusher.
Woolfolk noted that he was offered under-the-table payments by agents while he was still in school, as well as cars, and even a job for his stepfather, William Johnson, a Newark dockworker.
[21] In a December 1982 game against the Oilers, Woolfolk scored his first two NFL touchdowns, one rushing and one receiving, to help the Giants win, 17–14.
With the Giants trailing and less than two minutes remaining in the game, Woolfolk scored on a 40–yard gain after making a leaping, one-handed catch.
"[13] The article concluded that with Woolfolk and Rob Carpenter, the Giants "have their best backfield combination since the glory years of Frank Gifford and Alex Webster a quarter of a century ago.
[17] He also set the NFL record for most rushing attempts in a game with 43 carries (for 159 yards) on November 20, 1983.
[24] In 1984, Woolfolk was relegated to back-up status as Joe Morris took over the starting job at tailback midway through the season.
"[28] Woolfolk said at the time he was "not bitter" about the trade, and Coach Bill Parcells said: "Maybe a new place will be good for Butch.
[17] Woolfolk played three more seasons in the NFL with the Oilers and Lions from 1986 to 1988 but rushed for fewer than 100 yards in each of those years.
[30][31] In 1986, he switched from tailback to fullback,[32] but he only played in 10 games due to a fractured and dislocated shoulder in the second half of the season.
[21] His real estate experience began in 1985 as an independent owner and operator of rental properties in Houston, while he was still playing for the Oilers.
[21] In 1992, as co-owner of New Choice Builders, Woolfolk began building affordable single-family housing in Houston's revitalized communities.
Woolfolk procured the largest HUD grant given at that time by Fort Bend County for affordable housing assistance.
[21] In June 2007, Forward Edge, Inc. announced that Woolfolk had joined the company as its new business developer.