The boys had not long taken the lead through Ledley King's header when Michael Carrick set Jermain Defoe scurrying down the left flank and who, in turn, switched play back in-field and rolled the ball into the path of JJ who hit a first-time piledriver through everyone and bang on target.
The liklehood is, had it gone in, it would have been 2-0 and game over. However, the pretty much unsighted Jens Lehmann pulled off a remarkable stop and managed to tip the swerving and rising effort over the bar.
"I soon as I hit I thought, if it gets through, he was going to have problems saving it," recalled JJ. "It went through that many bodies and I caught it that well, I just thought it was in. Obviously he did really well to tip it over the bar.
It is hard to take when you think you've scored, but you've got to shake it off and hope another one comes along where you can do better
The 22-year-old's record at previous club Newcastle United - 12 goals in 152 appearances - suggested that goalscoring was not second nature for the energetic midfielder. It is an area of his game he is seeking to improve on and says his two goals in our last three games have given him great confidence to push on and get more.
"Of course, any time I'm in front of goal now I feel like I'm going to score. I've just got to keep gambling, take a few shots here and there and hopefully they will keep going in for me.
"At Newcastle I played in a number of different roles and had one good goalscoring season that I have been desperate to get back to and repeat.
"The two goals I've got here already have been great for me and I'm getting into positions now where I look like I might score goals. I can feel that and it is good for me."
Jermaine Jenas admitted he thought he'd notched his third goal in as many matches with his screamer of a shot against Arsenal last weekend.