| September 30
|
LAS
|
 B.Mode
|
Rakyl joins.
|
LAS
|
 FON
|
Romanilly and Bostero leave.
|
LAS
|
 Rebirth.F
|
Megajp, MANTARRAYA and Frescolita join.
|
LAS
|
 LK
|
WhiteLotus re-joins.
|
INT
|
Riot
|
Patch v5.19 is released.
|
LAN
|
 GLG
|
Don Cholo leaves.
|
LAS
|
B.Mode
|
Rakyl joins.
|
| September 29
|
NA
|
 TL
|
Xpecial announces he will be leaving.
|
BR
|
 JAYOB
|
Rakin leaves.
|
| September 28
|
LAN
|
GLG
|
NerzhuL joins.
|
| September 27
|
LAS
|
 KLG
|
WhiteLotus and Serafin leave. SagaZ re-joins and Rakyz joins.
|
| September 26
|
LAN
|
GLG
|
Gyga leaves. Easy and ChumpJohn join.
|
| September 25
|
LAN
|
 HvK
|
Mike leaves.
|
LAS
|
B.Mode
|
Panduro retires.
|
NA
|
 CLG
|
Xmithie's visa problem is resolved, and he will play in the jungle for the 2015 Season World Championship.
|
| September 24
|
LAN
|
GLG
|
 Gaming Gaming renames to  Galactic Gamers. Oddie, Don Cholo, 1an and Gyga join.
|
| September 23
|
NA
|
 ARENA
|
 Team Dragon Knights renames to Team Arena Online. Seraph, Kez, and Ninja join.
|
| September 22
|
OCE
|
Riot
|
 Team Immunity organization and owners are banned from competing in any League tournament until the end of the 2017 season.
|
| September 21
|
KR
|
 CJ
|
Helper, Trick, and Max leave.
|
NA
|
 TDK
|
Ninja joins permanently (previously was on loan).
|
CN
|
 WE
|
Ninja leaves.
|
CIS
|
 HR
|
Likkrit joins. pvpstejos and dayruin rejoin. Symphony moves to sub. LeX and Dimonko leave.
|
| September 20
|
LAS
|
Rebirth.F
|
Relenus retires.
|
OCE
|
OPL
|
 Legacy Genesis qualify for 2016 OPL Split 1.
|
| September 19
|
OCE
|
OPL
|
Team Immunity qualify for 2016 OPL Split 1.
|
LAN
|
 LYN
|
Arce rejoins. Kraki leaves.
|
LAN
|
 GG
|
Arce leaves.
|
| September 18
|
OCE
|
OPL
|
Absolute qualify for 2016 OPL Split 1.
|
LAN
|
LYN
|
Jirall joins.
|
LAN
|
 D9
|
Jirall leaves.
|
NA
|
 DIG
|
Rico steps down as head coach.
|
| September 17
|
INT
|
Riot
|
Patch v5.18 is released.
|
OCE
|
 Av
|
Kenste retires.
|
LAN
|
LYN
|
Nerzhul leaves and Seeiya re-joins.
|
EU
|
 OG
|
Hermit moves to Head Coach.
|
| September 15
|
LAN
|
LYN
|
Uri rejoins.
|
LAS
|
 FG
|
Uri leaves.
|
| September 14
|
LAS
|
B.Mode
|
LarK joins and Criiss moves to subs.
|
LAN
|
 BWL
|
Fearless rejoins and Axkhan joins. Zevymo, Idiovishus, Yogi, Harm and Pedro leave.
|
| September 13
|
LAN
|
 MYM.LAN
|
Axkhan leaves.
|
LAN
|
GG
|
Fearless leaves.
|
| September 12
|
LAN
|
MYM.LAN
|
irvintaype leaves.
|
LAS
|
LK
|
Mettaz leaves.
|
LAN
|
HvK
|
Porky and xpng join. Anti and Mike move to sub.
|
LAN
|
LYN
|
Porky leaves.
|
KR
|
LCK
|
 SBENU Sonicboom qualify for 2016 LCK Spring Season.
|
| September 11
|
NA
|
CLG
|
HuHi will replace Xmithie in the jungle for the 2015 Season World Championship.
|
CN
|
 OMG
|
Gogoing, LoveLing and Cloud retire.
|
LAS
|
LK
|
Nothing leaves.
|
KR
|
LCK
|
 Incredible Miracle qualify for 2016 LCK Spring Season.
|
| September 10
|
LAS
|
Rebirth.F
|
AkMu leaves.
|
| September 08
|
SEA
|
 KLH
|
JaeYoongJo and nKai leave. Vyprex joins as manager.
|
LAS
|
 BEN
|
Rakyz rejoins. Gos leaves. Ominator becomes a support.
|
NA
|
 T8
|
Goldenglue becomes starting mid laner. Slooshi becomes a substitute.
|
| September 07
|
NA
|
TL
|
Peter moves to  Team Liquid Academy.
|
EU
|
 UOL
|
Vardags moves to sub.
|
| September 06
|
NA
|
NA LCS
|
 Team Coast and  Team 8 qualify for 2016 NA LCS Spring Season.
|
| September 05
|
BR
|
WCS
|
 paiN Gaming qualify for 2015 Season World Championship.
|
INT
|
2015 IWCT
|
 paiN Gaming   Kaos Latin Gamers in IWCT Chile.
|
EU
|
EU LCS
|
 Gamers2 and  Gambit Gaming qualify for 2016 EU LCS Spring Season.
|
KR
|
WCS
|
 KT Rolster qualify for 2015 Season World Championship.
|
KR
|
LCK
|
KT Rolster  Jin Air Green Wings in 2015 Season Korea Regional Finals.
|
CN
|
WCS
|
 Invictus Gaming qualify for 2015 Season World Championship.
|
CN
|
LPL
|
 EDward Gaming Invictus Gaming in 2015 Season China Regional Finals.
|
| September 04
|
CN
|
WCS
|
EDward Gaming qualify for 2015 Season World Championship.
|
| September 02
|
INT
|
Riot
|
Patch v5.17 is released.
|
| September 01
|
EU
|
OG
|
LeDuck steps down as coach.
|
