The Foxes hammered Chelsea 5-2, though Emenalo found the back of the net for the hosts with a screamer.
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Emenalo is the son of former Chelsea technical director Michael Emenalo, now in charge of Saudi Pro League recruitment.
Emenalo qualifies internationally for the USA, Nigeria and England.
Chelsea coach Hassan Sulaiman told the club's website: "I was really pleased for Landon to score and I think he had a relatively decent performance too.
"At 2-1, you could see the confidence lift the boys. They celebrated together and we just needed to build on that momentum."