Plymouth Argyle boss John Sheridan thinks they have to keep a clean sheet to overturn their League Two play-off deficit at Wycombe on Thursday.
The Pilgrims lost the first leg 3-2 at Home Park but late goals from substitutes Zak Ansah and Jason Banton kept them in the semi-final tie.
"I feel as though we've got to keep a clean sheet," Sheridan told BBC Devon. "I'm confident that we can get a goal."
Wycombe finished the season three places and 13 points above Argyle.
In the previous six meetings between the sides the away side has prevailed, which could be a good omen for Sheridan's side.
|Victories for the visitors|
|Plymouth Argyle 2-3 Wycombe Wanderers (9 May 2015)|
|Wycombe Wanderers 0-2 Plymouth Argyle (10 Feb 2015)|
|Plymouth Argyle 0-1 Wycombe Wanderers (16 Sep 2014)|
|Wycombe Wanderers 0-1 Plymouth Argyle (11 Mar 2014)|
|Plymouth Argyle 0-3 Wycombe Wanderers (14 Sep 2013)|
|Plymouth Argyle 0-1 Wycombe Wanderers (29 Dec 2012)|
"I feel as though we're still right bang in the tie," added Sheridan.
"I know we've got to score a goal, so we've got to try to force the issue and get at them, but at the same time there's 90 minutes."
Plymouth won 2-0 at Wycombe when the sides met in League Two in February - a repeat of that result in the second leg would see the Pilgrims through to the final.
"Whether Wycombe sit back or not, that's not my job. That's Gareth Ainsworth's job.
"I've seen it so many times in play-off games over the years where the team who go into the second leg with the advantage come unstuck, so I'm hoping that's the case on Thursday."