Clubs angling to sign Masahiro Tanaka made formal offers by Jan. 16, Nikkan Sports reports (Japanese link). The list of teams includes the Yankees, Dodgers, Diamondbacks, White Sox and Cubs, with nearly all clubs putting together offers worth more than $100MM over six years.

The Diamondbacks have made no secret of their pursuit of Tanaka this winter, and according to Nikkan, they've offered him a deal for six years and $120MM. Such a contract would be the largest in Diamondbacks history by a wide margin. "Like other teams, we're very interested," CEO Derrick Hall was quoted as saying at a recent meeting of MLB owners. "We want to win this competition." Owner Ken Kendrick also reportedly met with Tanaka directly during his recent tour of clubs in the U.S.

The Dodgers and Yankees are believed to have made equivalent offers, according to Nikkan, while comments by Angels owner Arte Moreno suggest that the team would have trouble fitting Tanaka into its budget.