Unlike the observed trends in general teacher education, the use of videos as a reflective tool with preservice English as a Second Language (ESL) teachers remains underexplored in MATESOL (Master of Arts in Teaching English to Speakers of Other Languages) programs. The present qualitative study examined how 5 nonnative- speaking preservice teachers used the videos of their own microteaching performances to mediate their reflective practices. The results from the qualitative analysis of the participants' post-microteaching reflective reports showed that they used videos to explore their professional and non-native identities, practical knowledge base, and pedagogical knowledge base. The results are discussed with respect to their implications for educational practice with preservice ESL teachers.