1In a one group pretest-posttest design, 15 elite academy cricketers were exposed to 2 two Personal-Disclosure Mutual-Sharing (PDMS) sessions during a pre-season tour. 3 Within PDMS1, athletes disclosed (via prepared speeches) relationship-oriented 4 information and within PDMS2, mastery-oriented information. Social identity, social 5 identity content, and collective efficacy were measured at baseline (one-week before 6 the tour), post-PDMS1, mid-point, and post-PDMS2, while social validation was also 7 obtained after each intervention session. Quantitative data revealed significant 8 increases in social identity and friendships identity content at post-PDMS1, and 9 results identity content and collective efficacy at post-PDMS2. Qualitative social 10 validation data highlighted the thoughts and feelings of the athletes before their 11 speeches and supported the effectiveness of the PDMS sessions. In sum, the data 12 suggest practitioners can develop team outcomes (e.g., a focus on results) through 13 developing specific aspects of teams' identities. Study limitations, practitioner 14 guidelines, and areas for future research are discussed. 15 16