diff --git a/domain/base.go b/domain/base.go
new file mode 100644
index 0000000..18b3971
--- /dev/null
+++ b/domain/base.go
@@ -0,0 +1,17 @@
+package domain
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+type (
+	BaseModel struct {
+		*gorm.Model
+		ID        uint           `gorm:"primarykey" json:"id"`
+		CreatedAt time.Time      `json:"createdAt"`
+		UpdatedAt time.Time      `json:"updatedAt"`
+		DeletedAt gorm.DeletedAt `gorm:"index" json:"deletedAt"`
+	}
+)
diff --git a/domain/domain.go b/domain/domain.go
deleted file mode 100644
index d0dfd4b..0000000
--- a/domain/domain.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package domain
-
-import (
-	"time"
-
-	"gorm.io/gorm"
-)
-
-type (
-	BaseModel struct {
-		*gorm.Model
-		ID        uint           `gorm:"primarykey" json:"id"`
-		CreatedAt time.Time      `json:"createdAt"`
-		UpdatedAt time.Time      `json:"updatedAt"`
-		DeletedAt gorm.DeletedAt `gorm:"index" json:"deletedAt"`
-	}
-	Player struct {
-		BaseModel
-		FirstName string `json:"firstName"`
-		LastName  string `json:"lastName"`
-	}
-
-	Registration struct {
-		BaseModel
-		PlayerId int64  `json:"playerId"`
-		MatchId  int64  `json:"matchId"`
-		IsPaid   bool   `json:"isPaid"`
-		Comment  string `json:"comment"`
-	}
-
-	Match struct {
-		BaseModel
-		Start    time.Time `json:"start"`
-		End      time.Time `json:"end"`
-		Location string    `json:"location"`
-	}
-)
diff --git a/domain/match.go b/domain/match.go
new file mode 100644
index 0000000..2a29e04
--- /dev/null
+++ b/domain/match.go
@@ -0,0 +1,10 @@
+package domain
+
+import "time"
+
+type Match struct {
+	BaseModel
+	Start    time.Time `json:"start"`
+	End      time.Time `json:"end"`
+	Location string    `json:"location"`
+}
diff --git a/domain/player.go b/domain/player.go
new file mode 100644
index 0000000..9402fc3
--- /dev/null
+++ b/domain/player.go
@@ -0,0 +1,7 @@
+package domain
+
+type Player struct {
+	BaseModel
+	FirstName string `json:"firstName"`
+	LastName  string `json:"lastName"`
+}
diff --git a/domain/registration.go b/domain/registration.go
new file mode 100644
index 0000000..1e1fcd5
--- /dev/null
+++ b/domain/registration.go
@@ -0,0 +1,17 @@
+package domain
+
+type Registration struct {
+	BaseModel
+	PlayerId int64  `json:"playerId"`
+	MatchId  int64  `json:"matchId"`
+	IsPaid   bool   `json:"isPaid"`
+	Comment  string `json:"comment"`
+}
+
+func (reg *Registration) MarkPaid() {
+	reg.IsPaid = true
+}
+
+func (reg *Registration) MarkUnpaid() {
+	reg.IsPaid = false
+}
diff --git a/handler/match.go b/handler/match.go
index 48260d9..aeacc4b 100644
--- a/handler/match.go
+++ b/handler/match.go
@@ -24,7 +24,7 @@ func NewMatchHandler(db *gorm.DB, sugar *zap.SugaredLogger) *matchHandler {
 
 func (h matchHandler) GetAll(ctx *gin.Context) {
 	var result []domain.Match
-	h.db.Find(&result)
+	h.db.Order("start DESC").Find(&result)
 	ctx.JSON(http.StatusOK, result)
 }
 
@@ -62,6 +62,7 @@ func (h matchHandler) GetRegistrationsByMatch(ctx *gin.Context) {
 		SELECT pl.id AS player_id, CONCAT(pl.first_name, ' ', pl.last_name) AS player_name, re.id AS registration_id, re.match_id, re.is_paid
 		FROM "players" pl
 		LEFT JOIN "registrations" re ON pl.id = re.player_id AND re.deleted_at IS NULL AND re.match_id = ?
+		ORDER BY pl.first_name ASC
 	`, matchId).Scan(&result)
 
 	h.sugar.Info(result)
diff --git a/handler/player.go b/handler/player.go
index 1427f9c..9c260ff 100644
--- a/handler/player.go
+++ b/handler/player.go
@@ -40,6 +40,6 @@ func (h playerHandler) Create(ctx *gin.Context) {
 
 func (h playerHandler) GetAll(ctx *gin.Context) {
 	var result []domain.Player
-	h.db.Find(&result)
+	h.db.Order("first_name ASC").Find(&result)
 	ctx.JSON(http.StatusOK, result)
 }
diff --git a/handler/registration.go b/handler/registration.go
index 7915666..e019b45 100644
--- a/handler/registration.go
+++ b/handler/registration.go
@@ -55,6 +55,26 @@ func (h registrationHandler) Unregister(ctx *gin.Context) {
 	ctx.JSON(http.StatusOK, id)
 }
 
+func (h registrationHandler) MarkPaid(ctx *gin.Context) {
+	registrationId, _ := ctx.Params.Get("registrationId")
+	entity := domain.Registration{}
+	h.db.Find(&entity, registrationId)
+
+	entity.MarkPaid()
+	h.db.Save(&entity)
+	ctx.JSON(http.StatusOK, entity)
+}
+
+func (h registrationHandler) MarkUnPaid(ctx *gin.Context) {
+	registrationId, _ := ctx.Params.Get("registrationId")
+	entity := domain.Registration{}
+	h.db.Find(&entity, registrationId)
+
+	entity.MarkUnpaid()
+	h.db.Save(&entity)
+	ctx.JSON(http.StatusOK, entity)
+}
+
 func (h registrationHandler) GetAll(ctx *gin.Context) {
 	var result []dto.RegistrationOverviewDto
 	h.sugar.Info("querying registration report")
diff --git a/main.go b/main.go
index 6b4226f..7828daf 100644
--- a/main.go
+++ b/main.go
@@ -42,11 +42,15 @@ func main() {
 	{
 		v1.GET("/players", playerHandler.GetAll)
 		v1.POST("/players", playerHandler.Create)
+
 		v1.POST("/matches", matchHandler.Create)
 		v1.GET("/matches", matchHandler.GetAll)
 		v1.GET("/matches/:matchId/registrations", matchHandler.GetRegistrationsByMatch)
+
 		v1.GET("/registrations", regHandler.GetAll)
 		v1.POST("/registrations", regHandler.Register)
+		v1.PUT("/registrations/:registrationId/paid", regHandler.MarkPaid)
+		v1.PUT("/registrations/:registrationId/unpaid", regHandler.MarkUnPaid)
 		v1.DELETE("/registrations/:registrationId", regHandler.Unregister)
 	}