DENIS Smith took his patched-up side to relegated Wycombe and was delighted at his side's discipline.
Chris Llewellyn's late goal earned them their second away draw in a row.
Smith said: 'The last three games, we've been hard to beat because we've sat the two wingbacks in, worked hard in midfield and relied on the two lads up front to hopefully hit teams on the break.'
It was a formula that worked well enough for the Dragons on Saturday as they withstood an opening 45 minutes of pressure before displaying more ambition in the second period.
Although Darren Ferguson had recovered from illness on Friday to lead the side, a stomach upset forced Paul Barrett to drop out 90 minutes before the game, prompting Smith to hand teenager Levi Mackin an unexpected Football League debut.
The youngster, alongside fellow 18-year-olds Craig Morgan and Simon Spender, did not disappoint.
But Wrexham lived dangerously and a casual Morgan was grateful to Mike Ingham for his third-minute save when Nathan Tyson took advantage of a mistake by the defender.
A first-time shot from distance by Mackin failed to trouble Wayne Henderson in the home goalmouth after a rare foray into opposition territory for the youngster.
Danny Bulman's speculative effort caused a moment of panic in the visitors' penalty area and Paul Edwards threw his body in the way of Danny Senda's goalbound drive before defender Stuart Nethercott wasted the best chance of a one-sided period, heading wide from Senda's free kick.
Back on defensive duty, Nethercott's slip gave Hector Sam an opportunity, but Henderson made a fine save.
Early second-half shots from Llewellyn and Morgan signalled a shift in the balance of the game. A quickly-taken Ferguson free-kick then gave Llewellyn another brief opening, but Roger Johnson did well to close down his opponent.
The game looked to be heading for a 0-0 draw until the crowd were livened up by two goals within the space of a minute.
Wycombe broke the deadlock 11 minutes from the end when a Senda corner was only partially cleared to the edge of the penalty area, from where Johnson's low shot was deflected inside Ingham's right-hand post.
But the fans had hardly settled back into their seats when Wrexham were level.
There seemed little danger when Steve Roberts hoisted the ball high and long into the Wycombe area.
But, unnerved by the presence of the everwilling Llewellyn, no one took responsibility, allowing the striker to roll the ball into the net.