Answer by taking a quote from the following article:

John William Heisman (October 23, 1869 - October 3, 1936) was a player and coach of American football, baseball, and basketball, as well as a sportswriter and actor. He served as the head football coach at Oberlin College, Buchtel College (now known as the University of Akron), Auburn University, Clemson University, Georgia Tech, the University of Pennsylvania, Washington & Jefferson College, and Rice University, compiling a career college football record of 186-70-18. In 1917, Heisman's Georgia Tech Golden Tornado were recognized as the national champion. Heisman was also the head basketball coach at Georgia Tech, tallying a mark of 9-14, and the head baseball coach at Buchtel, Clemson, and Georgia Tech, amassing a career college baseball record of 199-108-7.

The 1906 Georgia Tech team beat Auburn for the first time, and in a loss to Sewanee first used Heisman's jump shift offense, which became known as the Heisman shift. In the jump shift, all but the center may shift into various formations, with a jump before the snap. A play started with only the center on the line of scrimmage. The backfield would be in a vertical line, as if in an I-formation with an extra halfback, or a giant T. After the shift, a split second elapsed, and then the ball was snapped. In one common instance of the jump shift, the line shifted to put the center between guard and tackle. The three backs nearest the line of scrimmage would shift all to one side, and the center snapped it to the tailback.  The 1907 team played its games at Ponce de Leon Park, where the Atlanta Crackers also played. The team went 4-4, and suffered Heisman's worst loss at Georgia Tech, 54-0 to Vanderbilt. "Twenty Percent" Davis, considered twenty percent of the team's worth, was selected All-Southern.  Chip Robert was captain of the 1908 team which went 6-3, including a 44-0 blowout loss to Auburn in which Lew Hardage returned a kickoff 108 yards for a touchdown. Davis again was All-Southern. Georgia attacked Georgia Tech's recruitment tactics in football. Georgia alumni incited an SIAA investigation, claiming that Georgia Tech had created a fraudulent scholarship fund. The SIAA ruled in favor of Georgia Tech, but the 1908 game was cancelled that season due to bad blood between the rivals. Davis was captain of the 1909 team, which won seven games but was shutout by SIAA champion Sewanee and Auburn.

what happened in 1906?
Georgia Tech team beat Auburn for the first time, and in a loss to Sewanee first used Heisman's jump shift offense,