Fulham senior coach Stuart Gray praised the battling qualities of his players as they drew 2-2 at home to Brentford.
The interim first-team manager took charge of his first game as the West London side continue to look for a permanent head coach.
Gray was happy with his side responding after going behind early on, but he admitted defensive frailties still remain.
"I felt the game was there to be won but more so, if you look at the Championship, there lots of draws," he said.
"We are getting to the business end of the season and we've got to start putting points on the board in threes. If you want momentum and to climb up the league, you've got to go for it.
"It just seems a spooky that that's 14 set-plays we've conceded from this season. Our Achilles heel this season has been defending corners.
"It doesn't matter how you defend, there will always be goals conceded from set-plays. If the delivery is right, and the timing of the run is right, then sometimes you just need that bit of luck.
"I'm disappointed I'm talking about one point and not three."
"We were playing a side full of confidence - obviously they've got a new manager and they probably started a bit brighter than us."
Brentford took the lead from the penalty spot on 18 minutes through Alan Judge, after Ashley Richards fouled captain Jake Bidwell.
Fulham equalised six minutes before the break, albeit in fortunate circumstances when James Tarkowski headed past Button after a dangerous McCormack cross.
Andrew Lonergan was the busier of the two keepers in an increasingly open contest, firstly excellently getting down low to save a 61st-minute low drive from Lasse Vibe.
A minute later, he was forced to block an fierce shot from Judge from an acute angle.
The frustration from Brentford was magnified significantly on 65 minutes, when Moussa Dembele was able to deftly turn the ball past the onrushing Button after McCormack fed him through into the middle of the box.
Parity was restored on 70 minutes, when Jack O'Connell connected to a Tarkowski flick-on from a corner, to equalise from close range.
McCormack was denied from his 76th-minute free-kick on the edge of the box, when his effort was punched away by Button.