The 18-year-old winger has enjoyed a breakthrough season so far, scoring three goals and adding two assists in 35 appearances for the Merseyside club.
|10/1||Fernando Torres is 10/1 with BetVictor to sign for the Reds before September 1
Speaking to ESPN after the game, coach Eastick commented: "He was very good. Brendan has obviously rested him a little bit recently.
"He hasn't played a great deal of football of late so getting a game under his belt with benefit him.
"He is a talented player and I think possibly that rest has helped. Brendan felt he had to take him out of the firing line a little bit at Liverpool."
England ran out 3-0 winners on the night, as the Romanians struggled to contain both the pace and interplay between Sterling and teammate Wilfried Zaha.
Eastick added of Sterling: "He is a very young player and people forget how young he is.
"You do need to rest players at the right time. Possibly it has done him a little bit of good and he enjoyed his game against Romania. His performance was very good."