John Curran

John Curran testified for the defense on Day 54 about Tamerlan Tsarnaev's boxing and his limited childhood observations of Jahar. Under questioning by Timothy Watkins, the boxing coach recalled Tamerlan as initially charming and eager but reluctant to follow instructions to change his boxing style. He described Tamerlan's father as supportive and thought Tamerlan tried harder when his father attended.

Curran recounted Tamerlan's illness during the 2009 national competition and said a foreign-athlete restriction prevented him from advancing to nationals in 2010. He could not secure an exception despite Tamerlan's request. During the examination, the court admitted a Lowell Sun article over a relevance objection but limited its purpose to establishing that an article about the event existed, not proving its assertions.

Curran recalled probably seeing Jahar twice at the gym and described him as following his older brother. His age estimates varied: ten or eleven on direct examination and nine or ten on cross-examination. On cross, he confirmed that he had never coached Jahar and that the encounters were at least ten years earlier. He recalled the boy rolling around inside the ring or bouncing off its ropes while coaching took place on the floor. His belief that Jahar wrestled came from newspapers, not personal coaching experience.