Yeah Martinez stands big for a bit longer, though he's also reading Diarra's position and gambling as Diarra could have put it through his legs, He'd also slipped prior to Isidor goal as I also posted it as it may not have been as simple a finish as some thought.
Martinez slips which leaves a bit more space to score from but Martinez still gets his fingertips to the ball as Isidor doesn't put it out of his reach like you see sometimes. Shit happens and it's a pisser that Martinez chose to stay up longer and whip a hand up to save it.