The Toronto Tempo forward will make her debut in the three-on-three league at TD Garden in January while Indiana's All-Star center targets a return for season four.
Toronto Tempo forward Isabelle Harrison will join Unrivaled for the 2027 season, stepping into the roster opening created by Indiana Fever center Aliyah Boston as she rehabilitates her right knee following postseason surgery.
The three-on-three winter basketball league confirmed the roster adjustment on Wednesday, October 28, 2026, announcing that Harrison has been selected to enter the competition's player pool ahead of its third campaign.
“Isabelle Harrison is Unrivaled,” the league announced in an official statement. “Harrison will join Unrivaled for the 2027 season as Aliyah Boston continues recovery from a procedure and is expected to return in season four as part of her multi-year deal.”
Boston underwent surgery in mid-October to repair a torn lateral meniscus in her right knee. The procedure took place shortly after the Indiana Fever concluded their 2026 WNBA campaign with a first-round playoff elimination. The injury originally surfaced during Unrivaled competition in the previous offseason, but Boston elected to manage the physical discomfort across the summer schedule.
Despite playing through the knee condition, the 24-year-old post presence produced the most productive offensive season of her young professional career. Boston established career highs with 16.1 points and 1.5 steals per game for Indiana, while contributing 8.0 rebounds, 3.0 assists and 1.2 blocks per contest across 40 regular-season starts.
The surgery requires an extended period of rest and physical therapy, ruling Boston out of winter game action. In August, Unrivaled had announced that Boston signed a multiyear contract extension to remain a cornerstone of the upstart circuit. League officials emphasized that her absence is temporary, with full expectations for her to return to active competition for season four in 2028.
Fever medical staff and team officials have prioritized long-term joint health for their franchise cornerstone. With Indiana aiming to build on consecutive postseason appearances, sitting out winter three-on-three competition allows Boston to concentrate entirely on strength training and functional recovery before WNBA training camp opens in late April.
Harrison brings a tested veteran presence to Unrivaled following a breakout individual performance during the 2026 WNBA season. Playing for the expansion Toronto Tempo, the 6-foot-3 forward established personal career highs across multiple statistical metrics, averaging 12.8 points, 6.9 rebounds and 1.5 assists in 32 games.
The upcoming campaign will mark Harrison's debut in Unrivaled, though the 33-year-old forward possesses extensive experience competing in condensed offseason environments. Harrison previously participated in Athletes Unlimited, demonstrating the physical mobility, half-court screening and interior footwork demanded by compressed basketball formats.
Drafted 12th overall in 2015 out of the University of Tennessee, Harrison has accumulated a decade of professional seasoning across stints with the Phoenix Mercury, San Antonio Stars, Dallas Wings, Chicago Sky and Toronto. Her interior passing, offensive rebounding and mid-range touch provide a functional replacement for the interior physical presence Boston typically provides on both ends.
Harrison's addition ensures that the league maintains high-level frontcourt depth while offering the veteran an elite domestic platform during the traditional WNBA offseason schedule.
Unrivaled is preparing to launch its third season on January 8, 2027, with opening night games scheduled at TD Garden in Boston, Massachusetts. The venue marks a notable milestone for the organization, transitioning opening weekend showcase fixtures into major East Coast professional arenas.
Founded by WNBA stars Breanna Stewart and Napheesa Collier, the league features compressed three-on-three full-court play designed to provide top domestic players with competitive compensation and training infrastructure during the winter months. Roster spots are limited and highly sought after, with player personnel decisions managed through a centralized selection committee.
The upcoming season in Boston will feature eight franchises competing across an eight-week regular season schedule followed by championship playoffs. Harrison will integrate into team training camps beginning in late December, while Boston will continue her non-contact rehabilitation program with Indiana medical staff.
For Boston, sitting out the 2027 tournament represents a rare pause in an otherwise durable professional career. The 2023 WNBA Rookie of the Year had never missed a regular-season contest across her first three seasons in Indianapolis, logging 124 consecutive games before the knee procedure necessitated a structured competitive hiatus and extended physical recovery.
Source:
Athlon Sports / Yardbarker October 28, 2026
Fieldhouse Files October 28, 2026
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