Tillman's big moment came in the fifth minute of stoppage-time, when he made a crucial goal-line clearance to deny PSG a winning goal late in the match.
Overall the 22-year-old midfielder had a great showing, completing 85 percent of his 40 pass attempts while creating one big scoring chance.
In Ledezma's brief stint, the 24-year-old helped lock down the defense, while also earning a yellow card caution in stoppage-time for time wasting.
With the result, PSV sit on two points through three matches, this being their second-straight 1-1 draw; the other came on Oct. 1 with a stalemate against Sporting CP.