The Lightning tweaked D Victor Hedman's five-year, $20 million contract extension after it was rejected by the NHL's Central Registry.

The original terms were $3 million next season (including a $1.5 million signing bonus); $3 million in 2013-14; $4 million in 2014-15; $6 million in 2015-16, and $4 million in 2016-17.

Hedman will now receive $5.75 million in 2015-16 and $4.25 million in 2016-17.

The reason for the change is Rule 50.7 of the collective bargaining agreement, which states any decrease in player salary and bonuses from one year to the next may not exceed 50 percent of the player salary and bonuses of the lower of the first two years of a contract; if the first and second years pay the same, 50 percent of that amount.

Because the first and second years of Hedman's extension pay $3 million, the decrease in salary from the fourth season to the fifth cannot exceed $1.5 million, hence the new terms.