Trestman is high on former pupil Jim Harbaugh

LAKE FOREST, Ill. -- San Francisco’s Jim Harbaugh provided glowing reviews of Chicago’s Marc Trestman back in 2013, saying he “taught me everything." The latter reciprocated on Friday as his team prepared to board a flight for the Bears-49ers matchup Sunday at Levi’s Stadium.

Harbaugh and Trestman worked together on the staff of the Oakland Raiders back in 2002. It was Harbaugh’s first coaching job as a quality control coach on offense, and he reported directly to Trestman, who served as offensive coordinator.

“Jim, he’s an amazing guy. He’s hypercompetitive, was extremely detailed and really worked hard at his job. He was quality control. He was drawing the pictures,” Trestman said. “The standard was very, very high. He took it very, very seriously. He went from there, he moved on. He started working with the quarterbacks in his second year and spending … individual time with them -- just a good friend, and just a very good football coach and person.”

After the Bears hired Trestman as head coach in 2013, Harbaugh spoke on the "Waddle & Silvy" show” on ESPN Chicago 1000, saying the 49ers still use Trestman's system of calling plays.

Asked at the time whether Chicago hit a home run with the hiring of Trestman, Harbaugh, a former Bears quarterback, said, “Absolutely. Grand slam. That was a grand slam hire. You see the coaches that Marc has put around him. They know football. He knows football. He’s a great teacher. That’s something I learned working with Marc, by example and by things he would tell me. That’s one of my lucky breaks in coaching was to work with Marc Trestman, because he took the time to train me and to teach me. I will always be thankful for that.”

During their time working together, Trestman quickly noticed Harbaugh’s competitive nature and drive.

“He was very serious about making sure every picture was perfect. It was always detailed out,” Trestman explained. “If there was a line that wasn’t correctly done, he took it personal that he didn’t do it right. He was a guy [who] spent time at the office, slept at the office, did whatever he could to help the football team.”