Taiwo, the Renton, Wash. native and Newport High grad, is in a tightly contested battle with Oregon All-American senior David Klech, who is less than a hundred points back at 4,127. The two are well clear of third-place, held by UCLA's Dominic Giovannoni with 3,804 points.
Taiwo set personal bests in all five first day events, beginning with the 100 meters, in which he broke 11 seconds for the first time, clocking 10.98, worth 865 points, followed by a long jump of 23-11.5 (7.30m) worth 886 points.
In the shot put, Taiwo took the lead from Klech with a toss of 42-11 (13.08m), worth 672 points. The duo tied for first in the high jump, each clearing 6-11 (2.11m), picking up 906 points.
Taiwo ended day one by winning the 400m in a personal best of 48.49 to cross the 4000 point barrier for the first time.
“I feel good, I definitely was hoping for a first solid day,” Taiwo said. “I didn’t do well in my last decathlon so I wanted to get my spirits back. It’s great to have my family here and win an event. It felt great and I’m going to keep it rolling into day two in this great weather. I love competing in this weather.”
Washington State sophomore Sean Harris sits in ninth at the halfway mark with a score of 3487 (11.53/20-7 (6.27m)/43-5.25 (13.24m)/6-4 (1.93m)/53.21). while Washington's Andrew Ferleman is in 13th at 3346 (11.45/21-2.75 6.47m)/37-6.5 (11.44m)/6-1.5 (1.87m)/54.17).
In the heptathlon, Washington State's Shaquana Logan, competing in her first heptathlon, stands in fifth after day one with a score of 3121 points, with teammate Angela Jensen in seventh at 3032 points.
Samantha Henderson of Arizona Sate currently leads with a score of 3396 points.
Logan ran a 100m hurdles time of 13.83 seconds, equal to her non-wind-aided lifetime-best time, high jumped a PR height of 5-feet, 3 inches (1.60m), threw the shot put a PR distance of 30-8 1/2 (9.36m), and ran the 200m in a PR time of 24.92, third-best of the field.
Jensen opened with a 100m hurdles time of 14.20 seconds, high jumped 5-0 1/2 (1.54m), threw the shot put a distance of 33-4 3/4 (10.18m), and ran the 200m dash in a season-best time of 25.13.
Washington's Sarah Schireman is in 11th with 2748 points, while Husky freshman Shelby Williams is 12th at 2700 points.
The Pac-10 multi events championships resumes Saturday afternoon at 3 pm. The decathlon leaderboard is available here, while the heptathlon standings are available here.
NOTE: The University of Washington, Washington State University, and the Pac-10 Conference contributed to this report.