Last Updated：2025/11/20
(baseball) A pitch thrown with a grip in the horseshoe
orientation of the ball, with the rotation at a slight angle resulting in less Magnus effect as compared to a four-seam fastball since only two of the ball's seams cross the flight path; the pitch is delivered with a similar velocity as a four-seam fastball, but has a degree of sink.
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two-seam fastball
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Source Word
two-seam fastball
Noun
(baseball)
A
pitch
thrown
with
a
grip
in
the
"horseshoe"
orientation
of
the
ball,
with
the
rotation
at
a
slight
angle
resulting
in
less
Magnus
effect
as
compared
to
a
four-seam
fastball
since
only
two
of
the
ball's
seams
cross
the
flight
path;
the
pitch
is
delivered
with
a
similar
velocity
as
a
four-seam
fastball,
but
has
a
degree
of
sink.
Japanese Meaning
野球における2シーム・ファストボールは、馬蹄状のグリップで握られ、ボールの縫い目が2本だけ飛行経路を横切るように投げられる速球です。四縫いのファストボールに比べ、マグナス効果が弱く、沈み味（シンク）が見られる特徴があります。
Sense（1）
(baseball)
A
pitch
thrown
with
a
grip
in
the
"horseshoe"
orientation
of
the
ball,
with
the
rotation
at
a
slight
angle
resulting
in
less
Magnus
effect
as
compared
to
a
four-seam
fastball
since
only
two
of
the
ball's
seams
cross
the
flight
path;
the
pitch
is
delivered
with
a
similar
velocity
as
a
four-seam
fastball,
but
has
a
degree
of
sink.
（ plural ）
