In the first main event of his career, Tim Boetsch of Lincolnville didn’t make it out of the first round.

Dan Henderson knocked out Boetsch 28 seconds into their middleweight fight Saturday night at the Smoothie King Center in New Orleans.

Boetsch tried to go on the offensive at the start, but Henderson stunned Boetsch with a right. He followed with a knee, several right hands and an uppercut that sent Boetsch to the canvas. Boetsch was unable to get up as Henderson threw a barrage of punches, and referee John McCarthy stopped the fight.

Henderson, a 44-year-old former Strikeforce and PRIDE champion, improved to 31-13. Boetsch is 2-5 in his last seven fights, and his record dropped to 18-9.

BASEBALL

NORTH COUNTRY BASEBALL LEAGUE: The Old Orchard Beach Surge suffered their fourth loss of the season, losing to the Road City Explorers at the Ballpark.

Surge starting pitcher Vin Roth allowed three runs on three hits and struck out two in 5 1/3 innings.

Will Benenson and Jake Sprengle scored in the ninth for Old Orchard Beach.

TWILIGHT LEAGUE: Connor Ditrich hit a two-run single in the top of the ninth inning as Aero Heating & Ventilation scored four runs to beat the EDGE Academy 6-2 in a season opener in Cumberland.

Max McCoomb and Anthony Sciadone each hit a double for Aero.

• Forrest Chadwick hit a home run and two doubles to lift Lenders Network to a 9-4 win over Patriot Insurance in the season opener in Cumberland.

TRACK AND FIELD

DIAMOND LEAGUE: Mo Farah, the world and Olympic 5,000 and 10,000-meter champion, withdrew on the morning of a meet in Birmingham, England, saying he was “emotionally and physically drained” after a week in which Coach Alberto Salazar was accused of using doping practices for his athletes at the Nike Oregon Project.

AUTO RACING

FORMULA ONE: Lewis Hamilton earned his fourth win of the season at the Canadian Grand Prix in Montreal.

Hamilton and Mercedes teammate Nico Rosberg started on the front row and were never threatened on their way to a 1-2 finish.

Hamilton leads the standings in a quest for his second straight world championship.

COLLEGES

BASEBALL: Zach Jackson pitched 32/3 scoreless innings of relief and Arkansas earned its first College World Series berth in three years with a 3-2 victory over Missouri State in their super regional.

• Jared Poche struck out seven and did not allow a run until the eighth inning, and LSU clinched its 17th College World Series appearance with a 6-3 victory over Louisiana-Lafayette in Baton Rouge, Louisiana.

Basketball

WNBA: Alex Bentley scored 17 points and the Connecticut Sun spoiled the Atlanta Dream’s home opener with a 75-70 victory.

SOCCER

MLS: Clint Irwin recorded his sixth shutout of the season and Colorado tied Real Salt Lake 0-0 in Sandy, Utah to snap the Rapids’ three-game losing streak in the Rocky Mountain Cup.

• The San Jose Earthquakes overcame two red cards to tie 10-man FC Dallas 0-0 in San Jose, California.

– From staff and news services