Earning a much larger role in 2019, Littlejohn played in 48 of Tech's contest with 29 starts after serving mostly off the bench in his first two years in Cookeville. He hit .243 with 28 hits, 40 runs, a pair of home runs, 17 RBI and a .339 slugging percentage.

In his final year suiting up for the Golden Eagles, the Decatur, Ala. native was stellar, moving to the outfield and thriving in 47 starts. He led the purple and gold with three triples, 14 home runs and a .635 slugging percentage while ranking second in extra-base hits and RBI. 

He hit .324 with 40 runs, 55 hits, 37 RBI and a .399 on-base percentage. In his final game, Littlejohn tied program single-game records with three home runs and 15 total bases (adding a triple) to help lead a five-run, ninth-inning comeback to walk-off SIUE, 13-12. He capped the year with an All-OVC First Team bid, OVC Player of the Week honor and two National Player of the Week honors (one from Collegiate Baseball and another from the National Collegiate Baseball Writers Association).