- Bats Right, Throws Right
- Height 5' 11", Weight 178 lb.
Lukas Jahn is a German infielder.
Jahn went 3 for 8 with a triple, walk, two runs and 2 steals for Germany in the 2009 European Junior Championship. He made his Bundesliga-1 debut in 2010 with the Regensburg Legionäre, going 1 for 7 with 3 walks. In 2011, he went 2 for 14 with two walks for Regensburg, mostly backing up Richard Klijn at 2B. The next year, he was 6 for 23 with six walks. He saw regular action in the 2012 European Cup but struggled, going 0 for 14 with 3 walks, 2 steals, an error and a run. He was in the 2012 MLB European Academy. Despite his limited body of work in Germany's top league, he made the German national team for the 2012 European Championship. In Germany's opener, he started at shortstop and hit leadoff, going 2 for 4 with a walk, double and run while handling 9 chances without an error. He had a strong event, hitting .368/.548/.421 with 10 walks in 8 games, scoring 3 and driving in 3. He fielded .902.
Jahn was a utility man for the 2013 Legionäre, playing every outfield position and every infield position except 1B, mainly backing up Klijn at 2B. He hit .309/.415/.382 and fielded .944. He was 2 for 14 in the postseason with two steals and 11 error-free chances; Regensburg won the title. In the 2013 European Cup, he struggled, going 1 for 17 with two walks, a hit-by-pitch, two runs, two steals in three tries and a .938 fielding percentage.
In 2014, he produced at a .294/.445/.459 clip while starting at 2B for the Legionäre. He scored 21 runs in 27 games and fielded .934. He tied Ludwig Glaser and Gary Owens for 6th in the league with 21 walks. In the 2014 European Cup, he batted .222/.300/.333 with four runs in five games, fielding .947; he tied for 10th in runs. He started for Germany in the 2014 European Championship but posted a .111/.360/.222 line with 6 walks and 3 runs in 6 games, fielding .968. He tied for 9th in the Euros in walks. He made a crucial error in a one-run loss to France but did steal home against Belgium.
The Berlin native was off to a hot start in 2015 (.290/.522/.452, 15 BB in 11 G) before a season-ending knee injury in May. He returned to play for Germany in the 2017 World Baseball Classic Qualifiers the following March and got into one game. He replaced Max Boldt (who had left for a pinch-runner) at 2B in the 9th inning against Nicaragua. He had one put-out in the bottom of the inning. In the top of the 10th, he flew out against Carlos González with a 4-3 lead, but Germany allowed two runs in the bottom of the tenth to lose the upset bid.