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Victor Martinez

'More than a tweak': Tigers introduce Justin Upton

Al Avila says it was around Christmas that the Detroit Tigers' offseason changed.

Owner Mike Ilitch was concerned about the team's ability to score runs.

"We had the company party here. He starts mentioning to me about, he's worried about our offense — and that never stopped," said Avila, Detroit's general manager. "He just kept on referring to that all the way through the holidays and into the new year."

With their owner authorizing yet another huge financial commitment, the Tigers added outfielder Justin Upton, agreeing to pay the free agent $132.75 million over six years. Detroit introduced Upton on Wednesday afternoon at Comerica Park....