The death of two-time Olympic equestrian Amy Tryon was caused by an accidental opiate overdose, according to the King County Medical Examiner's Office.

Tryon, 42, of Duvall, won a bronze medal in team eventing in the 2004 Athens Olympics and had a reputation as a fierce competitor who overcame financial hardship and injuries to become one of the country's finest riders. Tryon, who had also participated in the 2008 Beijing Olympics and worked as a firefighter for Eastside Fire and Rescue, died on April 12.

The medical examiner's office ruled that Tryon's death was accidental and said Tuesday that toxicology reports show she died of an "acute combined opiate" overdose. The office said toxicology tests showed that present in her system at the time of her death were Oxycodone, a semi-synthetic opioid, diphenhydramine, which is an ingredient in over-the-counter cold and allergy medications, and several benzodiazepines: Alprazolam, Diazepam, Lorazepam and Temazepam.

In recent years, Tryon had suffered knee and back injuries that forced her to cut back from riding.

She is survived by her husband of 16 years.

Notes

• Seattle University women's basketball assistant coach Kristen O'Neill has been promoted to the position of associate head coach.

She is now involved in all aspects of the program.

• Gonzaga's Victoria Fallgren and Tai Jade "TJ" Kliebphipat have advanced to match play of the Women's Amateur Public Links at Neshanic Valley Golf Course in Neshanic Station, N.J.

Fallgren shot a final-round 5-over-par 77 for a 36-hole total of 146 to tie for 37th and Kliebphipat fired a 1-over 73 for a two-round total of 147 and a tie for 43rd.

• Four-time defending champion Leslie Folsom won a pair of matches to advance to the semifinals of the Seattle Women's Golf Association City Championship at The Plateau Club in Sammamish.

Staff reporter Christine Clarridge and sports-information departments contributed to this report.