In 1934 Erlich and another player from Lwow, Władysław Loewenhertz represented Poland in an international match staged in Danzig where they defeated Germany 7:2.

The same team, Erlich and Loewenherz with the addition of Simon Pohoryles, represented Poland in 1935 at the Swaithling Cup competition in London where they achieved second ranking in A Group.

In the early 1930s, Ehrlich, who spoke eight languages,[6] moved to France, but remained loyal to Poland and represented his native land in subsequent tournaments.

[1] During the 1936 World Table Tennis Championships, which took place in Prague, Ehrlich became famous after a record-breaking one-point exchange with Romanian player Paneth Farkas.

For the previous 6 weeks, Erlich had been coaching Irish players, from beginners to the National Team, and must have been sorely out of top class practice.

After coaching sessions, for practice, he would play his unofficial assistant Zerrick Woolfson of Dublin, giving him 12 points start.

After finishing his career, Ehrlich became a coach, also developing a table tennis robot, which was presented by him in 1964 in Malmö, Sweden.