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How many years of productivity do Thornton and Marleau have left?

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Predictably, Marleau attempts a high-five when Thornton is clearly going for the fist-bump.
Predictably, Marleau attempts a high-five when Thornton is clearly going for the fist-bump.

If the Detroit Red Wings somehow do manage to miss the playoffs this season, preseason prognosticators who have been predicting that team's demise on a yearly basis ever since Steve Yzerman's sweater retirement ceremony can finally pat themselves on the back and move on to a new target: the Sharks. It's likely they're already doing so, or would be if lockout purgatory weren't keeping many who cover the sport from in-depth discussions about the coming season, with last year's 7th-place finish seen as evidence of an imminent collapse.

Realistically, rumors of San Jose's demise will be based on the predicted decline of the top two scorers in franchise history, Joe Thornton and Patrick Marleau. Two players alone might not make a team but considering the impact that duo has had on the Sharks over the past six years and the fact that Dan Boyle is on the wrong side of 35 makes the team's aging stars an interesting source of debate, centered around how much longer Thornton and Marleau have left as legitimate first-liners. It's obviously impossible to answer that question conclusively without a crystal ball but it is possible to look at historical comparables to make some educated guesses about what the Sharks' captain and former captain's career trajectories might look like from here on out. After the jump, we'll take a look at similarly productive players to Thornton and Marleau throughout NHL history to see how long it took them to fall off the map.

For what it's worth, it should be noted that this is fairly primitive analysis that focuses purely on offense and compares across a wide variety of eras but I think it still has some worth. For both players, I looked at their total production from their age 30 season to their age 32 season (defined by how old they were on February 1st of any given year) and examined where that stacked up compared to the production of every player in league history between the ages of 30 and 32 (really well, for the record--players like Gordie Howe, Stan Mikita and Steve Yzerman showed up as comparables to Thornton while Brendan Shanahan, Brett Hull and Mario Lemieux were on Marleau's comparables list). Since overall points are probably a better measure of Thornton's value while goals are more pertinent to Marleau, I compiled a list of every player in NHL history who scored within 20 points of the 236 Thornton racked up from 30-32 during their own 30-32 aged seasons and then looked at how many points they scored each of the next five years of their career. I did the same for every player who scored within 10 goals of the 111 Marleau buried from 30 to 32. The results are as follows, starting with Thornton:

Player Pts, Age 30-32 Pts, Age 33 Pts, Age 34 Pts, Age 35 Pts, Age 36 Pts, Age 37
Dennis Hextall 216 46 49 23 N/A N/A
Doug Gilmour 216 82 53 56 73 38
Stan Mikita 220 80 86 57 49 59
Jeremy Roenick 221 59 47 N/A 22 28
Mark Recchi 221 64 52 75 N/A 64
Gordie Howe 223 77 86 73 76 75
Jacques Lemaire 224 55 N/A N/A N/A N/A
Rick Middleton 225 68 32 N/A N/A N/A
Pavel Datsyuk 226 67 N/A N/A N/A N/A
Mats Sundin 227 N/A 78 76 78 28
Bernie Federko 228 57 N/A N/A N/A N/A
Theoren Fleury 231 63 33 N/A N/A N/A
Jean Pronovost 233 67 43 58 N/A N/A
Mike Gartner 236 68 64 N/A 54 63
Martin St. Louis 246 80 94 99 74 N/A
Mike Modano 246 44 N/A 77 43 57
Steve Yzerman 249 74 79 52 48 N/A
Darryl Sittler 249 63 27 N/A N/A N/A
Jarome Iginla 256 86 67 N/A N/A N/A
Average 231 67 59 65 55 52

  • This group as a whole experienced a fairly steep decline in both their 33 and 34-aged seasons, going from averaging 77 points a year from 30-32 to 67 at 33 and just 59 at 34.
  • The best-case scenario here, if we could handpick a career trajectory for Thornton to follow, would be Martin St. Louis. Unfortunately, it's unlikely the Sharks add a Steven Stamkos in the next two seasons.
  • A more realistic, but still hopeful, comparable might be Mats Sundin who missed his 33-year-old season due to the last lockout, something that stands a good chance of happening to Thornton too, but came back to average 77 points a season over the next three years.
  • These aren't pro-rated numbers, I went with raw points and raw goals for these analyses since that also indicates the impact of potentially age-related injury.
And here's Marleau:

Player Goals, Age 30-32 G, Age 33 G, Age 34 G, Age 35 G, Age 36 G, Age 37
Yvan Cournoyer 101 25 24 N/A N/A N/A
Brendan Shanahan 103 37 30 25 N/A 40
Dave Andreychuk 103 27 14 15 20 20
Rod Gilbert 104 36 36 27 N/A N/A
Peter Stastny 105 29 18 24 17 N/A
Bill Guerin 106 34 N/A 13 32 36
Joe Sakic 108 26 33 N/A 32 36
Mats Sundin 109 N/A 31 27 32 9
Jean Ratelle 113 28 36 36 33 25
Frank Mahovlich 113 31 43 38 31 38
Brett Hull 114 27 32 24 39 30
Jarome Iginla 117 43 32 N/A N/A N/A
Darryl Sittler 118 27 11 N/A N/A N/A
Mario Lemieux 119 N/A N/A 35 N/A 28
Average 110 31 26 26 30 28
  • Again, the group as a whole suffered a pretty sharp decline going from averaging 37 goals a season from 30-32 to 31 at age 34 and just 26 at 35.
  • As we see in the chart of Thornton's comparables, the numbers seem to balance out after that but that could be as much about survivorship bias as anything else--the only players who even make it to 36 in the NHL are ones who are still productive.
  • It really is incredible how prolific Marleau has been the past three seasons when you look at the names that show up on this list.

So what does this all tell us? Well, nothing too unexpected--even players who have historically been as productive in their early thirties as Thornton and Marleau tend to tail off pretty substantially in their 33- and 34-year-old seasons, the former of which the Sharks' duo are slated to begin this year. This further underscores the importance of the organization keeping a keen eye towards the future and establishing a concrete plan for when Thornton and Marleau can no longer carry the mail on the team's top line. A younger secondary core of Joe Pavelski, Logan Couture, Marc-Edouard Vlasic and Brent Burns is already in place but there's no question they need to be supplemented with further talent for the team to remain competitive. Fortunately, this data also indicates that there's a good chance Thornton and Marleau can continue to be those support players if the team chooses to keep them around past their current contracts since players as good as they are have tended to provide at least second line-caliber offense into their late thirties.