Many NHL teams try to pair an offensive defenseman with a defensive-oriented partner. That made the Josi-Weber combination special; it was a blend of two multidimensional players who were strong at each end of the rink.
Josi was home in his native Switzerland when he heard the news of the trade and said he had no inkling the move was afoot.
"It was funny," Josi said Tuesday at Honda Center, recalling that day. "I was plugging in my phone, charging it, and I grabbed it half an hour later and had a bunch of texts on my phone. So I knew something had happened."
Josi and he and Weber spoke briefly shortly after the news broke, with Josi needing time to digest what this meant for Weber, for him and for the Predators.
Weber's influence on Josi's development cannot be overstated.
"He had a chance to play with Shea for years, and they were, in my opinion, the best defensive pairing in the League," Predators goaltender Pekka Rinne said.
"After Shea left, a lot of people thought: 'What's going to happen to Roman?' He showed that he can play with anybody and still be successful and be a very important player for us."
Nashville took Josi in the second round (No. 38) in the 2008 NHL Draft. After coming to North America two years later, he played a full season for Milwaukee of the American Hockey League in 2010-11 before joining the Predators for 52 games in 2011-12.
Now in his sixth NHL season, Josi, 26, remains one of the best-kept secrets in the NHL, a player with verve and flair who's capable of playing big minutes without a noticeable drop-off in his play. He has averaged more than 25 minutes per game in ice time in each of the past three seasons, and in 14 Stanley Cup Playoff games last season he averaged 27:57 per game and had nine points (one goal, eight assists).