TritonWear Race Analysis: 2019 NCAA Championships — Women’s 100 Breaststroke

Photo Courtesy: Peter H. Bick

The women’s 100y breaststroke at the 2019 NCAA Div 1 finals delivered an exciting race, as defending champion Lilly King broke her own NCAA and American record. Top breaststroker performers Lindsey Kozelsky and Sophie Hansson also graced the field, along with Delaney Duncan, who earned her spot in the top 10 fastest performers with this race.

King shot off to an incredibly fast start, leading the field by at least four tenths of a second in the first 25. She continued to generate the fastest speed throughout the race, widening her gap off every turn.

Though she swam the fastest speed in every lap, King only registered the highest stroke index (Speed x DPS) in the final lap. Her breaststroke efficiency in each lap was right around the average of the heat, opting to go for a faster stroke rate than high stroke efficiency for majority of the race.

While she stroked at a fast rate, her DPS did not drop off in any way, and this was key to her fast speed. She consistently supplemented her fast stroke rate with a moderately high DPS, giving her a great lead with each stroke.

Duncan, who finished next to King, also employed a fast stroke rate for most of the race. Interestingly, Duncan went from pulling with the slowest stroke rate and highest DPS in the 1st lap, to producing the fastest stroke rate with the shortest DPS in all subsequent laps.

Throughout the race, Duncan, Hansson, and Kozelsky were in a close match for podium finish, alternating leads in each lap. Kozelsky and Hansson both took longer strokes, with Hansson logging fairly consistent stroke rate and DPS for most of the race. Kozelsky’s stroke rate, however, tapered off after the halfway point while still pulling at nearly identical DPS as Hansson, giving Hansson the opening to take the lead in the back half of the race.

Meanwhile, Duncan was trailing behind Hansson and Kozelsky as they hit the 75-yard mark. But, with a fast turn heading into the final 25, she sped up her stroke rate even more, overtaking both Hansson and Kozelsky to win silver.

This race highlights the key role a fast stroke rate plays in sprint events, and the importance of balancing it out with high enough DPS. King and Duncan, the top two finishers, had the fastest stroke rates in their heat. One difference in their stroking was King’s ability to hold a higher DPS at her stroke rate, combining good quality strokes with fast stroke turnovers, ultimately leading a 100-yard race by more than two seconds.

To dive into the numbers of each athlete yourself, use the interactive board below to see exactly how they performed across all metrics:


For more exciting races we’ve analyzed, check out these posts:

2018 USA Nationals

2018 Commonwealth Games

2017 FINA World Championships

2017-18 NCAA Race Comparison