Wycombe Wanderers are through to the Sky Bet League Two play-off final following a 2-1 victory at Adams Park against Plymouth Argyle.
The Chairboys led 3-2 after the first leg, and the hosts began brighter.
Paul Hayes, who opened the scoring for Wycombe at Home Park, gave the Chairboys the lead inside ten minutes as Pilgrims keeper Luke McCormick failed to deal with Sam Saunders corner, leaving Hayes open the scoring.
The hosts then had a number of chances to double the lead but McCormick stopped Aaron Holloway’s effort, before Nico Yennaris saw his header go wide.
McCormick then stopped Saunders from scoring, but was unable to do anything about Wycombe’s second goal. Joe Jacobson’s corner was delivered and Mawson beat McCormick to the ball, taking the defenders tally to eight goals this season.
Plymouth manager John Sheridan made three changes at the break as Jason Banton, Zak Ansah and Ryan Brunt all came on.
Banton, who scored the Pilgrims second goal at Home Park came close as his cross come shot dipped over 20 year old keeper Alex Lynch only to be denied by the bar.
Bobby Reid then saw his effort brilliantly saved by Lynch, but couldn’t deny Brunt from scoring a backheel as he collected onto a pull back from Ansah.
Ansah then had an opportunity to score, but Lynch managed to deny the Charlton loanee.
Wycombe held on to reach the play-off final – a fantastic turnaround from Gareth Ainsworth’s side who only avoided relegation from League Two on the final day of last season.
The Chairboys will face Phil Brown’s Southend United at Wembley in the League Two play-off final.