How Ryu Hyun-jin changed in the early days of MLB and now Ryu Hyun-jin

(1)Korean Monster Ryu Hyun-jin returns to Hanwha Eagles and KBO League after 12 years
(2)I’m not a fan of Hanwha. Why am I crying
(3)Ryu Hyun-jin player
(4)Korean professional baseball
(5)Most strikeouts in regular innings
(6)First record 17K
(7)Congratulations.
(8)May 11, 2010 After Cheongju Stadium vs LG17K Complete Win, Electronic display board
(9)That’s because I’m a rat
(10)I automatically cried when the owner came back
(11)Anyway, people are naturally paying attention to Ryu Hyun-jin’s return to KBO, where he returned after 12 years
(12)Although his ball power has fallen, some say he will perform at the top of the KBO because he still has the best ball control
(13)It is difficult to reach the top of the KBO because the ball power has fallen Some say that it’s hard to get good grades
(14)Various expectations are pouring in, including opinions that it is difficult to perform well due to health problems
(15)Of course, it’s only a prediction, so there’s no right answer at this point
(16)However, I wrote this article because the majority seemed to predict Ryu Hyun-jin’s performance based on the premise that only his durability and pitch fell from his appearance 12 years ago and nothing else changed much
(17)Ryu Hyun-jin’s pitching has definitely declined, but he has made a surefire weapon in MLB is the gist of this article
(18)Cooking hitters with apparently great ball control and great changeups is not much different than before, but I’m ripping off detailed data
(19)Looking at it, Ryu Hyun-jin has become a different player than before
(20)First of all, how Ryu Hyun-jin changed from the past and the present Ryu Hyun-jin changed in this order
(21)I’m going to describe it
(22)1 Affected by the aging curve
(23)2 Not affected by aging curve
(24)3 definitely upgraded in MLB

(1)1 Affected by the aging curve
(2)1 Arrest Source Brooksbaseball
(3)Four-seam fastball average speed of 1474kmh 9159 miles 1426kmh 8863 miles
(4)Four-seam fastball maximum speed of 1541kmh 9574 miles → 1474kmh 9159 miles
(5)Since there are still many places in Korea that measure with the PTS system, the average four-seam restraint is expected to be about 140-141kmh in KBO, and the maximum restraint is expected to be about 145-146kmh
(6)2 MovementSourceBrooksbasball
(7)Four Heart Fast Ball Vertical Movement 235 cm 925 inches → 163 cm 640 inches
(8)Four-seam fast ball horizontal movement 136 cm 535 inches → 165 cm 649 inches right-handed batter outside direction
(9)The vertical movement decreased by 7cm compared to its heyday, but the horizontal movement increased by 3cm instead
(10)The pitch of the four-seam fastball itself has decreased, but it’s more sync than before
(11)It was changed to induce a hit by moving to
(12)The vertical movement has fallen every year since 2017, and the horizontal movement is
(13)Increase occurs from 2021

(1)2 Not affected by aging curve
(2)1 Revolution Source Baseball Savant
(3)Forsim 2062 RPM → 2051 RPM
(4)Cutter 2029 RPM → 2019 RPM Cutter added for the first time
(5)As of 2017
(6)Sinker 1988 RPM → 1983 RPM Chenjia 1569 RPM → 1480 RPM
(7)Curve 2303 RPM → 2473 RPM
(8)When you throw an official ball of the KBO, it’s about 200 RPM
(9)500 RPM is expected to come out
(10)Considering that it came out about 2,300 RPM during the KBO period, it is appropriate to assume that it increases by 300 RPM
(11)2 Rotation Efficiency Source: Baseball Savant
(12)Even though I’m old, I’m still in the mid-to-late 90s except for the cutter
(13)show rotational efficiency
(14)The rotational efficiency of the cutter was not high in the first place and is maintained compared to the past
(15)Third Control Source Baseball Savant
(16)476 Of All Pitching Is Still Forming Near Borderline
(17)He’s showing the master of ball control
(18)The Major League average is 39
(19)You don’t have to bring that kind of material, but you can explain it with just one scene
(20)It’s possible

(1)3 An upgrade from MLB
(2)So what did Ryu Hyun-jin improve in the United States
(3)Since 2015, the Statcast Revolution has allowed pitchers to measure the trajectory of the ball’s rotation speed trajectory in the case of batters Ryu Hyun-jin used it actively to make a change in his pitching style
(4)You’ve probably heard a lot that it’s easy to target batters if a changeup that comes and falls like a fastball is combined with a fastball. In fact, Ryu Hyun-jin’s main repertoire in KBO was this four-seam – changeup pitching combination But Ryu took it a step further and tried to split it in three directions
(5)The change was that I threw away the slider and added a cutter and sinker
(6)1 Forsim – Cutter – Sinker Combine Left Center Right 3 Direction
(7)2 Forsim – Sinker – Change up combination to split left in 3 directions
(8)A total of two three-way splits have been attempted and are considered successful as of 2018
(9)However, these three-way splits do not consist of simply combining the pitches
(10)It is necessary to match the rotation direction of the three-dimensional movement ball similarly, but it is by no means an easy task, and there are not many players in MLB who can play it perfectly. It is safe to say that KBO does not have it
(11)Let’s first look at how Ryu Hyun-jin’s pitching trajectory has changed
(12)Source Baseball Savant
(13)In the first place, Ryu Hyun-jin, who is famous for his constant release point, is already trying to split in three directions in 2017, so the trajectory of the pitch seems to be becoming similar to some extent However, it’s not completely completed yet, but compared to 2018 data, it’s definitely a feeling
(14)Source Baseball Savant
(15)He completed it perfectly in 2018 and still has this trajectory
(16)The trajectory is so perfectly aligned that it is difficult for the batter to judge the pitch with the naked eye until the middle of the ball’s flight. However, the trajectory of the pitch is not only similar, but also the movement and rotation direction of the ball are very similar, which can be confirmed in the following data

(1) Source: Baseball Savant
(2)It is difficult to interpret the above data very neatly because he is not familiar with the field, but you can see that the rotation directions of the four-seam, cutter, sinker, and change-up combination overlap in many parts. From the batter’s point of view, it would not have been easy to grasp Ryu Hyun-jin’s pitch even if the ball was slow because not only the trajectory of each ball but also the movement and rotation of the flying ball were similar The fact that Ryu Hyun-jin was able to record a good performance despite his low speed based on MLB standards shows that he was not only able to control his ball control
(3)Source Baseball-Reference
(4)In fact, after completing the three-way split, his ERA dropped sharply, and he became a completely different player than before, with two Cy Young Award nominations and MVP nominations It is also the secret to maintaining the ERA of three points in the 2023 season, although it was a small innings
(5)4 Conclusion
(6)To sum up, Ryu Hyun-jin still has the top-notch ball control, and his pitching has fallen to the average level of KBO standards, but he has become a pitcher who has become much more difficult to distinguish between pitches than before I lost my old ball power, but I came back with a solid weapon that could offset it It was not easy to grasp Ryu Hyun-jin’s pitch even with MLB hitters’ pioneering plan, but I think it will be easy to catch KBO hitters just by Ryu Hyun-jin showing the way he was in 2023
(7)It is now difficult to adjust the speed as before, so even if the cumulative stat may be insufficient because he can’t eat as many innings as he was in his prime, I predict that if he is healthy, he will be at the top of the league