Gary Waddock says his side pushed their Watford counterparts all the way in Saturday's Capital One Cup tie.
Wanderers more than matched their Championship opponents and Gianfranco Zola’s side only progressed thanks to Chris Iwelumo’s 110th-minute goal.
“The Watford players knew they had been in a game,” said Waddock.
“We kept battling and plugging away, it was just a mistake that has cost us in the end. It’s a positive day, but unfortunately the result didn’t go our way.
“It was a very good performance by our lads. Probably one mistake, or error, has cost us and they punished us for it. Overall I thought we played extremely well.
“We restricted them, we stopped them playing. The organisation and discipline from the players was good. We’ve got to take that into the league campaign.”
Watford boss Zola admitted his side had been fully tested by the Blues.
He said: “We wanted a competitive match and we certainly got that. Wycombe played a good game, they pressed well and made it hard for us to play where we wanted.“.This game will be good for us in the long run, getting a chance to assess certain situations before we start playing for points ”
Wycombe kick off their npower League 2 campaign on Saturday with a trip to newly-promoted York City.
Wanderers have an initial allocation of 100 standing and 200 seated tickets, with standing prices set at £16 for adults with concessions £10 and U5s free.
Seated tickets are £17 for adults, £11 for concessions free for U5s.
Tickets for disabled supporters are £16, this also includes a carer’s seat.
Supporters are urged to book through the club as it receives royalties for every ticket sold.
Buy through the ticket office on 01494 441118 or visit the Information Centre at Adams Park.
OWWSA are running a coach to Bootham Crescent which leaves Adams Park at 7am.
Prices are £27 for adults, £26 for students and £25 for children. OWWSA members receive a £3 discount. Call Rena on 01296 429307 to book.