Sinclair had a pretty unspectacular debut but did nothing wrong during his cameo as the products of Liverpool's youth system were on display in the closing stages with Raheem Sterling and Jordon Ibe operating either side of him.
The 18-year-old said that Brendan Rodgers told him to work hard during his opportunity.
Sinclair told the Liverpool website after yesterday's game: "I just got out there and tried to make sure I put all my effort in, tried to be good and simple when I got on the ball and just tried to give a good impression of myself.
"We've got an array of young talent at Liverpool. So for me to get the chance to play today was really good. I know there's a lot more young players coming through and they're all going to be good enough to play for Liverpool, so the future is really bright.
"You can see that with the philosophy that the manager has - if young players are showing that they have talent, then he's willing to put them in and give him a go, which is rare for a big club such as Liverpool.
"All the young players at Liverpool know that we really do have a chance."
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Sinclair grew into his role and he managed to touch the ball more frequently as Liverpool pushed for a late winner at Stamford Bridge.
But there will be much more work to do for Sinclair, as the striking options are inevitably going to be considered in the summer as Rodgers will need more goals from his side - with Divock Origi to arrive and Danny Ings strongly linked, Sinclair will want to impress at every opportunity he is given. With two games remaining he may get a couple more appearances under his belt.