The Arsenal striker grabbed his side's second goal in the 2-1 victory on Saturday.
The Gunners found themselves being held 1-1 by the Championship side ten minutes into the second half, after Sam Vokes cancelled out Calum Chambers’ opener.
The scorers were not to remain that way for long though, as a sweeping Arsenal move saw the ball find Sanchez in the box, with the Chilean making no mistake and putting his side 2-1 up.
It was another moment that demonstrated the quality that the forward possesses, and both Dublin and Sinclair were full of praise for him.
"Alexis Sanchez doesn't thrash the ball, he just guides it in with his side-foot using the pace on the cross, a very clever finish,” Dublin told BBC Sport.
"[It was] superb technique,” added Sinclair.
“The ball is put back into the box and there's Sanchez. World-class player. Loads of players would have thrashed that shot and it would have gone over or wide, he just guides it in.”
Arsene Wenger’s side will now be hoping that Sanchez can show that kind of lethal finishing in the remaining games of this season.
He has been absent for an extended period after picking up an injury before Christmas, but that break may have come as a blessing in disguise as it has allowed him a rest that he arguably needed following a busy 2015.
He has already made an impressive start to his return from that absence, and his side will hope he can have a big impact on their title run in the second half of the campaign.