“That's” is appearing in the news because it features in headlines about three separate sports stories, rather than one shared event. In tennis, Ben Shelton thought he had hit a 158mph serve at the US Open semi-finals, prompting the reaction, “That's not right!” Hawk-Eye recorded the serve at 144mph instead. The headline highlights both the surprise over the apparent speed and the strength of Shelton’s serve, even after the correction.
In college football, “That's about to change” refers to Ohio State’s schedule and readiness for tougher competition. The Buckeyes exited the playoff early last year, and some pointed to a weak schedule as a problem. In motorsport, “That's a big old whack!” accompanies coverage of F2 driver Tasanapol Inthraphuvasak walking away after his car went up in flames. Together, these headlines explain the repeated appearance of the word: it is being used to express surprise or signal a change across unrelated sports coverage.
