Via the NBC Sports Group:

BLACKHAWKS-LIGHTNING POSTS BEST STANLEY CUP FINAL NON-OT GAME 1 OVERNIGHT IN 18 YEARS

With a 4.23 metered market rating, the first game of the 2015 Stanley Cup Final posted the highest overnight rating for a Game 1 that ended in regulation in 18 years (DET-PHI on FOX; 5.2), and ranks as NBC’s second-best SCF Game 1 overnight ever, behind only the 2013 triple-overtime Game 1 between the Boston Bruins and Chicago Blackhawks (4.9 overnight).

Last night’s Stanley Cup Final Game 1 on NBC between the Chicago Blackhawks and Tampa Bay Lightning (8:15-11 p.m. ET) delivered a 4.23 metered market rating, up 11% vs. last year’s NYR-LA Game 1 (3.82; OT).

Locally, the Blackhawks’ 2-1 comeback win over the Lightning produced a 28.0 HH rating, the third-highest ever in Chicago for a Blackhawks game on NBC, trailing only the Stanley Cup Final-clinching Game 6 matchups in 2013 and 2010. Last night’s 28.0 overnight rating for Game 1 was up 12% vs. 2013 (25.1), and up 66% vs. Game 1 in 2010 (16.9).

Last night’s Game 1 produced a 17.9 rating in the Tampa market, the highest rating ever in Tampa for a Lightning game on an NBC network, up 50% vs. last Friday’s ECF Game 7 against the New York Rangers on NBCSN (11.9), and up 47% vs. Game 1 of the Lightning’s last SCF appearance in 2004 against Calgary (12.2; ESPN).