Introduced from the bench shortly before the hour mark, Elliott provided the fourth strike in Rovers’ 5-2 Championship victory at home to Birmingham City.
The Liverpool attacker, who also registered 11 assists in 2020-21, sprinted onto a pass into the right channel, moved into the box and lifted a lovely finish over the goalkeeper.
Elsewhere on the Championship final day, Sepp van den Berg completed the game as Preston North End clinched a 2-1 win at Nottingham Forest.
Harry Wilson played 77 minutes of Cardiff City’s 1-1 draw with Rotherham United before being replaced by Reds teammate Sheyi Ojo.
In League One, Liam Millar helped Charlton Athletic to a 1-0 win over champions Hull City as they narrowly missed out on the play-offs.
The forward, who started and played the full game at The Valley, punctuated a lively performance with a cross that led to Jacob Greaves’ own goal in the second half.
Charlton ended the season in seventh place, level on points with Oxford United in the final play-off spot but with an inferior goal difference.
In the Irish Premier Division, there was late disappointment for Vitezslav Jaros and St Patrick’s Athletic, who succumbed to a 2-1 defeat by Shamrock Rovers in stoppage time.
Kamil Grabara had better fortune between the posts, claiming a clean sheet as AGF Aarhus won 1-0 at Randers in the Danish Superliga.
Finally, Anderson Arroyo was involved throughout a 4-0 victory for Salamanca CF UDS over Real Oviedo B in Spain.