Tribal/team challenge record (14-for-24; 2 sit-outs):

• AU: 2017, Ep.1 RC - Helps carry the raft and get the rice; Samatau wins.
• AU: 2017, Ep.1 IC - Crosses obstacles and rolls cubes, and Samatau wins again.
• AU: 2017, Ep.2 RC (Water slide) - Loses a point to Sam, but Samatau wins, 7-5.
• AU: 2017, Ep.2 IC (Three little pigs OC, war clubs) - Crosses the obstacles, but Samatau blows a lead, loses.
• AU: 2017, Ep.3 RC (Big balls) - Helps push the big ball around, and Samatau wins.
• AU: 2017, Ep.3 IC (Rafts, bamboo tower) - Paddles and stacks bamboo, but Samatau loses.
• AU: 2017, Ep.4 RC (Coconuts, surfing) - Helps gather coconuts and move the raft; Samatau wins.
• AU: 2017, Ep.4 IC (Builders & runners) - One of the runners, but Samatau loses.
• AU: 2017, Ep.5 IC (Team "This Much") - Drops out somewhere in the middle; Samatau loses.
• AU: 2017, Ep.6 RC "By the Numbers" - First person to cross successfully, and Samatau wins.
• AU: 2017, Ep.6 IC (Water obstacles, puzzle) - Works the puzzle with Anneliese, and Samatau wins.
• AU: 2017, Ep.7 IC "Sumo'an Mud" - Scores a point vs. Michelle, and Samatau wins, 7-6.
• AU: 2017, Ep.8 RC (Ball on disc, tiles) - Helps carry the ball on the disc, but Samatau loses.
• AU: 2017, Ep.8 IC (Gates, sled) - Does not perform a task, as Samatau gets stuck on the gate maze, loses.
• AU: 2017, Ep.9 IC (Water football) - Part of one point-scoring team, as Samatau wins, 3-1.
• AU: 2017, Ep.10 RC (Palm tree puzzle) - Works the tree puzzle with AK, but Samatau blows their lead, loses.
• AU: 2017, Ep.10 IC (Disc race, circle puzzle) - Helps move discs along the rope, Samatau wins, easily.
• AU: 2017, Ep.11 RC (Keys, logo puzzle, sandbags) - Builds the block puzzle with AK, and Samatau wins.
• AU: 2017, Ep.12 RC "Idol Hands" - Sits out, as Samatau loses, 7-6.
• AU: 2017, Ep.12 IC (Filling up barrels) - Helps fill buckets with water; Samatau wins.
• AU: 2017, Ep.13 IC (Team "When it Rains") - Holds up her sandbag the entire time, but Samatau loses.
• AU: 2017, Ep.14 RC (Blindfolds, catapults) - Successfully smashes a watermelon, and Samatau wins.
• AU: 2017, Ep.14 IC (Planks, hanging puzzle) - Gathers and stacks planks; Samatau wins.
• AU: 2017, Ep.15 IC (A-frames, rope) - Sits out, as Samatau wins again.

Individual challenge record (2-for-5): (Mean % finish: 78.7%)

• AU: 2017, Ep.16 RC "Ring Leader" - Goes 90 minutes, survives the transition, and Tessa wins! (1st/12).
• AU: 2017, Ep.16 IC (Planking) - Holds on for 40 minutes, tenth to drop out (3rd/12).
• AU: 2017, Ep.17 IC (Rings, ropes, ramp) - Last place in the second round (6th/11).
• AU: 2017, Ep.18 IC "Bow Diddley" - Reaches the final stage, outlasts Locky, and Tessa wins! (1st/10).
• AU: 2017, Ep.19 IC "Over Extended" - Fifth out, in the deluge of drops at 3 meters (5th/9).

Duel/ hero challenge record (0-for-0):

• AU: 2017: None.

Idols held/played (1/1; 6 votes voided):

• AU: 2017, Ep. 4: Tarzan finds an idol, gives it to Tessa in camp, knowing she's the target (Day 11).
• AU: 2017, Ep. 4: Tessa plays the idol for herself, voiding six votes and saving herself, but the vote was split, and Tarzan gets voted out instead (Day 11).

VFB - Votes for the person booted (4/11):

• AU: 2017, Ep. 5: Aimee Stanton (voted out, 5-4).
• AU: 2017, Ep. 8 (1st vote): Tara Pitt (*not* voted out, 3-3-2; 5-1 on revote).
• AU: 2017, Ep. 8 (2nd vote): Anneliese Wilson (*not* voted out, 3-3-1; 5-0 on revote).
• AU: 2017, Ep. 18: Henry Nicholson (voted out, 6-4).

*Note: Both Ep.8 votes ended in the surprise exile of Tara and Anneliese to Asaga.

VAP - Votes against (7):

• AU: 2017, Ep. 3: Four votes, from Aimee, Anneliese, Tara, and Ziggy.
• [AU: 2017, Ep. 4: Six votes, from Aimee, AK, Anneliese, Tara, Tarzan, and Ziggy - all voided by Tarzan's idol.]
• AU: 2017, Ep. 19: Three votes, from Jericho, Luke, and Sarah (voted out, 3-2-2-2).

Jury votes made (0/0*):

• AU: 2017, Ep. 24: *Removed as a juror by Jericho, who won the juror removal advantage (Day 50).

Pre-game interviews

• None found.

Post-game interviews

• Ashling Lee at Popsugar.com.au (9/25/17): "Tessa O'Halloran on How She Became So Great at Those Endurance Challenges on Survivor"
• Ryan Brink at Brink of Reality (9/24/17): "Tessa O'Halloran Exit Interview | Australian Survivor 2017 Ep19 Recap - Sunday 24th September"

Official Ten SurvivorAU: 2017 bio excerpts (July, 2017):

"Always underestimated by her work colleagues and patients because of her age and gender, Tessa is highly intelligent and ready to compete.

Studying to become a doctor, Tessa worked under high-pressure conditions while attending lectures and studying to pass her physician’s exam. She is now one of the youngest doctors at her work.

Tessa’s youthful looks have meant patients and colleagues do not always think she knows what she is doing – but do not be fooled.

“I am quite used to people looking at me and thinking I am too young to be doing the job that I am doing, but I do it well. I do not make many mistakes. I know what I am doing,” she said.

Tessa’s strategy is to form an all-girls alliance and to work her magic when their backs are turned.

“Hopefully I am too small and blonde for the other survivors on the island to realise it, but I will work behind-the-scenes to play them against each other.

“They will not want to mess with me. When I am annoyed, I tend to have a quiet simmer. I then go out to get revenge and they will not see me coming.”

Tessa wants to win Australian Survivor for her family, especially her mum, and she does not feel any guilt about her strategy.

“I do not think that heroes go far in this game. People who say they are playing with honesty and integrity are infuriating. It is a game, it is not real life.”"