John Harbaugh speaks on Michigan scandal, brother Jim's ban: 'They don't have anything of substance'

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Michigan's Jim Harbaugh has served one-third of his ban from the sidelines in the wake of an investigation into sign-stealing by the school.

The Big Ten ruled that Harbaugh would not coach the Wolverines' final three games of the regular season as the school has been found "conducting an impermissible, in-person scouting operation over multiple years, resulting in an unfair competitive advantage that compromised the integrity of competition."

Since the ruling, Harbaugh has received tons of defense. Some stars on the team, as well as alum Tom Brady, posted a one-word message in response on social media in which they accepted the challenge: "Bet."

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Head coach John Harbaugh of the Baltimore Ravens (L) and head coach Jim Harbaugh of the San Francisco 49ers speak during warm ups prior to Super Bowl XLVII at the Mercedes-Benz Superdome on February 3, 2013 in New Orleans, Louisiana.   (Jamie Squire/Getty Images)

After Michigan took down Penn State on the road, acting head coach Sherrone Moore showed his support to Harbaugh in an emotional, explicit plea. Now, the Michigan head coach has garnered support from another notable figure: none other than his own brother.

John Harbaugh is the head coach of the NFL's Baltimore Ravens — the brothers even faced off in Super Bowl XLVII when Jim coached the San Francisco 49ers.

Of course, John will defend his younger brother, but he, too, made a serious plea about how proud he is of Jim for how he has handled himself throughout the scandal.

Head Football Coach Jim Harbaugh of the Michigan Wolverines is seen on the sideline during the first half of a