RealGM

TPA Model
The concept of total points added (TPA), isn’t particularly complicated. We’re looking at both defensive and offensive effectiveness on a per-possession basis while also incorporating the amount of playing time the contributor in question receives.
At the heart of the theory is this comparison between two hypothetical players:
Player A makes an average team 5 points better per 100 possessions than an average player would in his spot, and he plays 500 possessions.
Player B makes an average team 10 points better per 100 possessions than an average player would in his spot, and he plays 250 possessions.
Player B is more effective on a per-possession basis—twice as effective, in fact. But Player A spends twice as much time on the court. Theoretically, they should have identical values, as they would both add 25 points to an average team.
As such, the formula for TPA is rather simple. It’s broken down into two parts—offensive points added (OPA) and defensive points saved (DPS)—and each is calculated in the same vein.
OPA is derived by adjusting offensive box plus/minus (OBPM) to account for the number of possessions the player in question is present for. Similarly, DPS is derived from a similar adjustment of defensive box plus/minus (DBPM) with that same number of possessions. OBPM and DBPM, both calculated by Basketball-Reference.com, estimate the per-100-possessions value of a player on either end of the court.
Add OPA and DPS together, and you have TPA. A score of zero indicates a player was perfectly average (by no means a bad thing for rookies or lifelong end-of-bench players), while anything positive means they were better than an average-level replacement.

TerryTate wrote:With the right equations you can tell numbers to do almost anything.
I looked at the list and its telling me Bebe is MORE effective than Karl Anthony Towns.

Ok stat pro, let's use your equation go to Minn management and convince them Bebe is better than KAT and get them to trade us KAT.

TerryTate wrote:With the right equations you can tell numbers to do almost anything.
I looked at the list and its telling me Bebe is MORE effective than Karl Anthony Towns.

Ok stat pro, let's use your equation go to Minn management and convince them Bebe is better than KAT and get them to trade us KAT.

Truthrising wrote:

TerryTate wrote:With the right equations you can tell numbers to do almost anything.
I looked at the list and its telling me Bebe is MORE effective than Karl Anthony Towns.

Ok stat pro, let's use your equation go to Minn management and convince them Bebe is better than KAT and get them to trade us KAT.

Hey bud, before you roast me, I just came across this site..in no way am I nor have I said i'm some stat pro. Just here to share what i've come across..chill

S ID wrote:

TerryTate wrote:With the right equations you can tell numbers to do almost anything.
I looked at the list and its telling me Bebe is MORE effective than Karl Anthony Towns.

Ok stat pro, let's use your equation go to Minn management and convince them Bebe is better than KAT and get them to trade us KAT.

Nobody actually think this man.

Anybody with a half a brain cell can tell this stat is just a tool to show a bigger picture.

hyper316 wrote:Bebe play against bench players, KAT play against starters

Truthrising wrote:

TerryTate wrote:With the right equations you can tell numbers to do almost anything.
I looked at the list and its telling me Bebe is MORE effective than Karl Anthony Towns.

Ok stat pro, let's use your equation go to Minn management and convince them Bebe is better than KAT and get them to trade us KAT.

Hey bud, before you roast me, I just came across this site..in no way am I nor have I said i'm some stat pro. Just here to share what i've come across..chill

LonZoBallin wrote:How can you say these stats are far off? I look at the top players list and those are pretty much the best players in the League. Any stat that includes anything defence is obviously going to bring both JV and DD's ranking down. Why are you surprised by this. 349 may be hyperbolic but it's a telling stat imo

TerryTate wrote:

LonZoBallin wrote:How can you say these stats are far off? I look at the top players list and those are pretty much the best players in the League. Any stat that includes anything defence is obviously going to bring both JV and DD's ranking down. Why are you surprised by this. 349 may be hyperbolic but it's a telling stat imo

Since the top players in the leagues gets the most stats (and some pad their stats) of course they are going to be on top of this league. So saying "the best guys in the league are top, this looks right......" is a supreme OVERstatement

By this metric a broken Noah and aging David Lee with limited minutes is better than half our team.
FOH.......

Reason, I'm kind of peeved, is people believe in this kind of poor metrics and throw our resident metric guys (VVV) under the bus.

LonZoBallin wrote:

TerryTate wrote:

LonZoBallin wrote:How can you say these stats are far off? I look at the top players list and those are pretty much the best players in the League. Any stat that includes anything defence is obviously going to bring both JV and DD's ranking down. Why are you surprised by this. 349 may be hyperbolic but it's a telling stat imo

Since the top players in the leagues gets the most stats (and some pad their stats) of course they are going to be on top of this league. So saying "the best guys in the league are top, this looks right......" is a supreme OVERstatement

By this metric a broken Noah and aging David Lee with limited minutes is better than half our team.
FOH.......

Reason, I'm kind of peeved, is people believe in this kind of poor metrics and throw our resident metric guys (VVV) under the bus.

For the most part the best players in the League are at the top, how can you deny this? there's probably some cracks in the system but the majority of the best to be at the top. Obviously there's some guys like Gobert, Potter and Ariza but it mixes defence in, those are all really good defensive players....so it's not too big of a surprise.

What I think the real problem here is whenever someone brings up a Stat that doesn't fair kindly to JV it's a horrible stat right away. JV fans really need to back up and admit he's probably bottom 5 starting defensive centre in this league. It's a problem!!

LonZoBallin wrote:

TerryTate wrote:

LonZoBallin wrote:How can you say these stats are far off? I look at the top players list and those are pretty much the best players in the League. Any stat that includes anything defence is obviously going to bring both JV and DD's ranking down. Why are you surprised by this. 349 may be hyperbolic but it's a telling stat imo

Since the top players in the leagues gets the most stats (and some pad their stats) of course they are going to be on top of this league. So saying "the best guys in the league are top, this looks right......" is a supreme OVERstatement

By this metric a broken Noah and aging David Lee with limited minutes is better than half our team.
FOH.......

Reason, I'm kind of peeved, is people believe in this kind of poor metrics and throw our resident metric guys (VVV) under the bus.

For the most part the best players in the League are at the top, how can you deny this? there's probably some cracks in the system but the majority of the best to be at the top. Obviously there's some guys like Gobert, Potter and Ariza but it mixes defence in, those are all really good defensive players....so it's not too big of a surprise.

What I think the real problem here is whenever someone brings up a Stat that doesn't fair kindly to JV it's a horrible stat right away. JV fans really need to back up and admit he's probably bottom 5 starting defensive centre in this league. It's a problem!!