The Oklahoma City Thunder have arguably the deepest and most talented roster in the entire NBA. And this is why they're the defending champions and the favorites to win another championship in 2026. While the Thunder got many of their top NBA Draft picks right in recent years, which is how they've built this roster, they've also added several key pieces who weren't initially on the Thunder's roster but have become integral to the team's success. One of these is center Isaiah Hartenstein. The 28-year-old has found a home in Oklahoma City, adding a ton of value as their starting center. Oklahoma City Thunder center Isaiah Hartenstein (55) | Mark J. Rebilas-Imagn Images Hartenstein didn't come to Oklahoma City from the New York Knicks alone. He brought his wife, Kourtney , whom he has been married to since 2013. The couple began dating after Isaiah slid into Kourtney's DMs in 2019, and the two have been going strong ever since.…