Griner scores career-high 28 as Mercury beat Shock
Penny Taylor had 19 points, including 10 in the first quarter, for first-place Phoenix (9-3), which led by 15 in the second half before having to hold off the Shock. Tulsa pulled within six in the final 7 minutes.
Glory Johnson had 20 points and 11 rebounds for the Shock (4-7), who lost back-to-back nights to Los Angeles and Phoenix after winning four straight.
Tulsa center Courtney Paris added 15 points and 15 rebounds.
Phoenix improved to 5-1 at home and kept Tulsa the league's only team winless on the road at 0-6.
Skylar Diggins, fifth in the league in scoring at 18.9 points per game, was held to 12 on 4-of-15 shooting. She had seven assists.
Coming off a big night on Wednesday in a win over Minnesota, Griner shot 12 for 14 from the field, grabbed four rebounds and added six blocked shots.
The second-year standout had a then-career-best 27 points and career high-tying 18 rebounds against the Lynx.
The teams split their first two meetings this season, each having won at home.
The Mercury led by as much as 11 in the first half but Tulsa closed to 45-38 at the break, led by Johnson's 12 points.
Sparked by Taurasi's four-point play, the Mercury ran off a 16-4 spurt in the third quarter to open up a 65-50 lead with 3:30 left.
However, Tulsa bounced back with its inside game as Paris got a couple of easy putbacks to pull the Shock to 66-59 going into the final period. The margin could have been closer but Jennifer Lacy missed three of four free throws in the final minute of the quarter.
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