Kazuma Okamoto

OAA is Statcast's flagship defensive metric — it measures how many outs a fielder records above what an average fielder would on the same batted balls. +5 is above average, +10+ is Gold Glove caliber. Okamoto's 2026 OAA is updated weekly on this page in both the "2026 Defensive Summary" H2 section and the Defensive Metrics card (sourced from Baseball Savant's public leaderboard). First base is a position where OAA tends to be compressed compared to outfield, so it's most useful read alongside Fielding Runs Prevented — together they show how Okamoto's glove is contributing within the limited opportunities his position offers.

DRS (Defensive Runs Saved) and UZR (Ultimate Zone Rating) are well-known FanGraphs defensive metrics. This site standardizes on Baseball Savant's OAA and Fielding Runs Prevented (FRP) as the primary defensive read. FRP converts OAA into runs saved versus an average fielder — the same "runs prevented" scale as DRS, so the two are directly comparable. Okamoto's 2026 DRS-equivalent value is shown in the "2026 Defensive Summary" section alongside OAA and fielding percentage. For UZR specifically, refer to the FanGraphs page.

Okamoto's latest 2026 stats are updated daily in the stats box at the top of this page. Home runs, RBI, batting average, and OPS are tracked in real time. As the first Japanese position player in Blue Jays history, he is a key run producer in the middle of Toronto's lineup.

Through April 27 — exactly one month into his MLB career — Okamoto is hitting .222 with 5 HR, 11 RBI, and a .700 OPS over 27 games. Five home runs in his first month projects to roughly 30 HR over a full 162-game season, a credible MLB debut pace for a power hitter still adjusting. His 12 walks against 35 strikeouts suggest plate discipline is starting to surface, and the May-June trend will define how his 3x NPB Home Run King power profile (career-high 44 HR / .910 OPS in 2022) translates over a full season.

Okamoto has 5 home runs and a .700 OPS through 27 games (as of April 27) in his MLB debut season with the Blue Jays. The .700 OPS is below his .850+ NPB career average, but the 5 HR confirms the power is translating — opposite-field shots have been part of the mix, validating the all-fields slugger profile that scouts projected. Rogers Centre's above-average home run park factor remains a structural advantage as he settles into MLB pitching.

OPS (On-base Plus Slugging) is the sum of on-base percentage and slugging percentage — a quick measure of a hitter's run-producing value. MLB average OPS is roughly .720–.730; .850+ is All-Star caliber. wRC+ (weighted Runs Created Plus) adjusts for park and era, with 100 being league average and 120+ indicating an above-average hitter. Okamoto's NPB career OPS consistently exceeded .850, and his broad contact profile (hitting to all fields) projects a wRC+ in the 110–130 range once he adjusts to MLB.

The key challenges in Year 1 are: (1) adjusting to high-velocity breaking balls — especially sliders and cut fastballs thrown by AL pitchers; (2) adapting to a slightly wider MLB strike zone; and (3) getting comfortable with Rogers Centre's dimensions. His biggest advantage is his ability to drive the ball the other way with power — a rare skill for a right-handed slugger that translates well against MLB pitchers who work the outer half heavily.

Okamoto won three NPB home run titles with the Yomiuri Giants: 31 HR in 2019, 39 HR in 2021, and 44 HR in 2022, along with three RBI titles in the same years. His 2022 season — 44 HR and a .910 OPS — was his personal best, and he finished his nine-year NPB career with over 230 home runs. That track record of elite, sustained power production is why he signed a major-league deal with Toronto.

The "Season Analysis" section below the main stats box shows monthly charts for batting average, home runs, and OPS. You can see how his numbers trend from the early adjustment phase (March–April) through the dog days of summer, and compare home performance at Rogers Centre versus away games.

The defining feature of Okamoto's swing is his ability to drive the ball with real power to the opposite field (right-center) — something most right-handed sluggers cannot do consistently. By staying through the ball longer (an inside-out path through the zone), he can wait on outside pitches and punish them to right-center rather than rolling over to weak grounders. This opposite-field power is exactly what MLB scouts value most, because it means standard away-heavy pitching plans don't automatically shut him down. It's the main reason evaluators project him as more than a pull-side-only threat in the AL.

Yes — Rogers Centre consistently ranks among the top home run parks in MLB, with a park factor above 1.0 for home runs. The closed roof eliminates wind suppression (a major factor in outdoor stadiums), and the dimensions are favorable for right-handed pull hitters and opposite-field power hitters alike. Okamoto's power profile suits Rogers Centre well, and the controlled indoor environment also removes weather-related performance swings. The key thing to watch: compare his home and away splits. Some players post inflated numbers at home but struggle in pitcher-friendly parks like Fenway or Camden Yards.

Among all Japanese MLB hitters, Hideki Matsui (Yankees) is the closest comparison to Okamoto — both are right-handed corner sluggers with strong opposite-field power and above-average plate discipline. Matsui spent seven MLB seasons and finished with 175 HR and a .832 OPS. Okamoto's NPB profile (3 HR titles, .850+ career OPS) arguably exceeds where Matsui was when he came over. Ichiro was a completely different archetype — contact/speed, not power. Looking at the broader history of Japanese position players in MLB, true power hitters who maintained above-.800 OPS over multiple seasons are rare, which makes Okamoto's 2026 season a significant data point for how elite NPB sluggers translate to MLB.

Okamoto's today plate appearances (AB, hits, HR, RBI) are updated daily on the dedicated "Today" page. Pitch-by-pitch breakdowns, exit velocity, opposing pitcher arsenal, splits vs RHP/LHP, and a Unico AI analysis are all included. Live in-play updates run during the game; the final line and deeper analysis are posted by 18:00 JST after the game ends.

View Kazuma Okamoto's today plate appearances→

Kazuma Okamoto plays for the Toronto Blue Jays as a first baseman / DH. He signed via the posting system after the 2025 season and is the first Japanese position player in Blue Jays franchise history, anchoring the middle of Toronto's lineup in 2026. He bats and throws right-handed.