The Sarnia Sting ended 2019 with a 4-2 loss against the Knights before 9,036 fans in London.
After a scoreless opening period London's Sean McGurn scored his first goal of the season at the 4:37 mark of the second period assisted by Ben Roger and Matvey Guskov.
With 50 seconds left in the period the Knights made it 2-0 on Billy Moscal's goal with assists from Guskov and Jonathan Gruden.
Five minutes into the third Sean Gosing scored for Sarnia, his 26th of the season, assisted by Ryan McGregor and Brayden Guy.
The Knights would restore their two-goal lead on a goal from Luke Evangelista at the 15:27 mark with Nathan Dunkley assisting.
With 62 seconds left in regulation the Sting's Justin Nolet would score his fifth of the season from McGregor and Josling.
Evangelista scored his second of the game for London, an empty-netter, 17 seconds later.
Sarnia's Ethan Langevin stopped 39 of 42 shots while Brett Boschu made 29 saves.
Captain McGregor said "There were times when we were pretty good today but we just couldn't put together 60 minutes. It's kind of been the story the last couple of games here for us and it cost us."
Looking forward to the weekend McGregor said "We've got a couple of games that are pretty important this weekend, Owen Sound and the Soo. If we can get those wins it'll be important in the standings and we've got to find a way to battle back before it's too late."
Sarnia plays host to the attack on Friday and visit Sault Ste. Marie Saturday.
Both games can be heard on 103.9 FM - 1070 AM CHOK.
The Sting are in last place in the OHL's West Division, five points back of the Greyhounds and Flint Firebirds.
