The 23-year-old Porteous becomes the first English winner of The Amateur Championship since Gary Wolstenholme in 2003.
By winning the event, he earned a spot in The Open Championship at Muirfield in July as well as berth’s in next year’s U.S. Open at Pinehurst and Masters Tournament.
EUROPEAN TOUR: In Munich, Alexander Levy overcame two bogeys to shoot 4-under-par 68 in the third round to pull into a three-way tie with Ernie Els and Alex Noren atop the leaderboard of the BMW International Open.
The trio is even at 15-under 201 heading into today’s final round.
Els, who had a one-stroke lead and shot 69, remains confident he can claim the title. The two-time winner of the British Open and U.S. Open says, “I’m playing nicely.”
One stroke behind the leaders are Matthew Baldwin and Thomas Bjorn, while Peter Uihlein is another stroke further behind in sixth after 67.
WEB.COM TOUR: In Raleigh, N.C., Danny Lee shot 8-under-par 63 to take a four-stroke lead after three rounds of the Rex Hospital Open.
Lee made eight birdies at TPC Wakefield Plantation to get to 17-under 196.
Andrew Putnam, the first-round leader, shot 66 and is tied with Edward Loar (67) at 200.
Michael Putnam (65) and former Georgia Tech standout Chesson Hadley (69) are at 201.
Augusta’s Scott Parel, who won last week’s tour stop, shot 70 and is tied for 26th at 207.
CHAMPIONS TOUR: In Glenview, Ill., Craig Stadler grabbed the lead at the Encompass Championship with birdies on three of the four par-5s in a 65 that put him two shots ahead of Bob Tway and Jeff Sluman.
Stadler’s second round at North Shore Country Club included an inward nine of 4-under 32 that left him at 12-under 132. Tway also scored 65 and Sluman had 66 that included eight birdies and two bogeys.
David Frost is fourth three strokes back after a 67 that included six birdies.
Steve Pate, Mark Calcavecchia, Tom Lehman and Bernhard Langer are tied for fifth at 8-under. Calcavecchia and Langer added 69s to their opening 67s, while Pate and Lehman scored shot 66 in the second round.
Stadler had a share of the overnight lead with a Langer and Duffy Waldorf.
LPGA TOUR: In Rogers, Ark., Stacy Lewis made four consecutive birdies and eight overall to shoot 6-under-par 65 and join a group of four players atop the leaderboard at 10-under after the second round of the LPGA NW Arkansas Championship.
Lewis, the world’s No. 2 player, earned an unofficial win at the rain-shortened event as an amateur in 2007. She is the local favorite this week, having played collegiately at Arkansas.
Chie Arimura and Beatriz Recari both equaled Lewis’ 65 and are tied entering the final round with So Yeon Ryu.
I.K. Kim and defending champion Ai Miyazato tied for the lowest round of the day, each shooting 7-under 64.
First-round leader Mika Miyazato shot 70 and is three shots back.