Alan Dobbins/RMNB The Tampa Bay Lightning have made a major addition to their blue line, signing veteran defenseman John Carlson to a two-year contract worth $17 million, bringing in one of the most experienced right-shot defenders available in free agency. The deal carries an average annual value of $8.5 million and locks Carlson into Tampa Bay through the 2027-28 season as the organization continues to retool its defensive core for another championship push. Carlson, 36, be