diff --git a/src/consts/champion.rs b/src/consts/champion.rs
index 81bc755..017543a 100644
--- a/src/consts/champion.rs
+++ b/src/consts/champion.rs
@@ -1,16 +1,16 @@
-///////////////////////////////////////////////
-//                                           //
-//                     !                     //
-//   This file is automatically generated!   //
-//           Do not directly edit!           //
-//                                           //
+///////////////////////////////////////////////
+//                                           //
+//                     !                     //
+//   This file is automatically generated!   //
+//           Do not directly edit!           //
+//                                           //
 ///////////////////////////////////////////////
 
 use std::fmt;
 use num_enum::{ IntoPrimitive, TryFromPrimitive };
 use serde_repr::{ Serialize_repr, Deserialize_repr };
 
-/// League of Legend's champions.
+/// League of Legends champions.
 ///
 /// The documentation of each variant specifies:<br>
 /// NAME (`IDENTIFIER`, ID).
diff --git a/src/consts/division.rs b/src/consts/division.rs
index 941b03d..ec65b3b 100644
--- a/src/consts/division.rs
+++ b/src/consts/division.rs
@@ -1,11 +1,18 @@
 #![allow(deprecated)]
 
+use std::cmp::Ordering;
+
 use strum_macros::{ EnumString, Display, AsRefStr };
 use serde_repr::{ Serialize_repr, Deserialize_repr };
 use num_enum::{ IntoPrimitive, TryFromPrimitive };
 
+/// LoL and TFT rank divisions, I, II, III, IV, and (deprecated) V.
+///
+/// Sorts in reverse numeric order, from low to high rank.
+///
+/// Repr'd as equivalent numeric values, (1, 2, 3, 4, 5).
 #[derive(Debug, Copy, Clone)]
-#[derive(Eq, PartialEq, Hash, PartialOrd, Ord)]
+#[derive(Eq, PartialEq, Hash)]
 #[derive(EnumString, Display, AsRefStr)]
 #[derive(Serialize_repr, Deserialize_repr)]
 #[derive(IntoPrimitive, TryFromPrimitive)]
@@ -18,3 +25,25 @@ pub enum Division {
     #[deprecated(note="Removed for 2019.")]
     V   = 5,
 }
+
+impl Ord for Division {
+    fn cmp(&self, other: &Self) -> Ordering {
+        u8::from(*self).cmp(&u8::from(*other)).reverse()
+    }
+}
+
+impl PartialOrd for Division {
+    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
+        Some(self.cmp(other))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn sort() {
+        assert!(Division::IV < Division::I);
+    }
+}
\ No newline at end of file
diff --git a/src/consts/queue_type.rs b/src/consts/queue_type.rs
index 2d45172..0f8b39e 100644
--- a/src/consts/queue_type.rs
+++ b/src/consts/queue_type.rs
@@ -1,5 +1,6 @@
 use strum_macros::{ EnumString, Display, AsRefStr };
 
+/// LoL or TFT ranked queue types.
 #[derive(Debug, Copy, Clone)]
 #[derive(Eq, PartialEq, Hash)]
 #[derive(EnumString, Display, AsRefStr)]
diff --git a/src/consts/tier.rs b/src/consts/tier.rs
index 446c24f..b783e3d 100644
--- a/src/consts/tier.rs
+++ b/src/consts/tier.rs
@@ -3,21 +3,26 @@
 use strum_macros::{ EnumString, Display, AsRefStr };
 use num_enum::{ IntoPrimitive, TryFromPrimitive };
 
+/// LoL and TFT ranked tiers, such as gold, diamond, challenger, etc.
+///
+/// Sorts from lowest rank to highest rank.
+///
+/// Repr'd as arbitrary u8 values.
 #[derive(Debug, Copy, Clone)]
 #[derive(Eq, PartialEq, Hash, PartialOrd, Ord)]
 #[derive(EnumString, Display, AsRefStr)]
 #[derive(IntoPrimitive, TryFromPrimitive)]
 #[repr(u8)]
 pub enum Tier {
-    #[strum(to_string="IRON")]        Iron        =  40,
-    #[strum(to_string="BRONZE")]      Bronze      =  60,
-    #[strum(to_string="SILVER")]      Silver      =  80,
-    #[strum(to_string="GOLD")]        Gold        = 100,
-    #[strum(to_string="PLATINUM")]    Platinum    = 120,
-    #[strum(to_string="DIAMOND")]     Diamond     = 140,
-    #[strum(to_string="MASTER")]      Master      = 180,
-    #[strum(to_string="GRANDMASTER")] Grandmaster = 200,
-    #[strum(to_string="CHALLENGER")]  Challenger  = 220,
+    IRON        =  40,
+    BRONZE      =  60,
+    SILVER      =  80,
+    GOLD        = 100,
+    PLATINUM    = 120,
+    DIAMOND     = 140,
+    MASTER      = 180,
+    GRANDMASTER = 200,
+    CHALLENGER  = 220,
 }
 
 serde_string!(Tier);
@@ -28,12 +33,33 @@ impl Tier {
     ///
     /// Only these tiers are queryable by LeagueV4Endpoints::get_league_entries(...).
     pub fn is_standard_tier(self) -> bool {
-        self < Self::Master
+        self < Self::MASTER
     }
 
     /// If this tier is an apex tier.
     /// Master and above.
     pub fn is_apex_tier(self) -> bool {
-        Self::Master <= self
+        Self::MASTER <= self
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn sort() {
+        assert!(Tier::GOLD < Tier::DIAMOND);
+    }
+
+    #[test]
+    fn to_string() {
+        assert_eq!("GRANDMASTER", Tier::GRANDMASTER.as_ref());
+        assert_eq!("GRANDMASTER", Tier::GRANDMASTER.to_string());
+    }
+
+    #[test]
+    fn from_string() {
+        assert_eq!(Ok(Tier::GRANDMASTER), "GRANDMASTER".parse());
     }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 9837e36..4d04b10 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -7,8 +7,8 @@ pub mod consts;
 
 pub mod endpoints;
 
-mod riot_api_config;
-pub use riot_api_config::*;
+pub mod riot_api_config;
+pub use riot_api_config::RiotApiConfig;
 
 mod riot_api;
 pub use riot_api::*;
diff --git a/src/riot_api_config.rs b/src/riot_api_config.rs
index a678578..5593eb1 100644
--- a/src/riot_api_config.rs
+++ b/src/riot_api_config.rs
@@ -1,9 +1,8 @@
-pub mod riot_api_config {
-    pub const DEFAULT_BURST_PCT: f32 = 0.93;
-    pub const DEFAULT_BURST_FACTOR: u8 = ((BURST_FACTOR_DENOM * DEFAULT_BURST_PCT) as u16 - 1) as u8;
-    pub const BURST_FACTOR_DENOM: f32 = 256.0;
-}
-use riot_api_config::*;
+//! Configuration of RiotApi.
+
+pub const DEFAULT_BURST_PCT: f32 = 0.93;
+pub const DEFAULT_BURST_FACTOR: u8 = ((BURST_FACTOR_DENOM * DEFAULT_BURST_PCT) as u16 - 1) as u8;
+pub const BURST_FACTOR_DENOM: f32 = 256.0;
 
 /// Configuration for instantiating RiotApi.
 #[derive(Debug, PartialEq, Eq)]
diff --git a/src/riot_api_error.rs b/src/riot_api_error.rs
index aaa886b..34ee029 100644
--- a/src/riot_api_error.rs
+++ b/src/riot_api_error.rs
@@ -1,8 +1,12 @@
-use std::error::Error;
+use std::error::Error as StdError;
 use std::fmt;
 
-pub use reqwest::Error as ReqwestError;
-pub use reqwest::Response;
+/// Re-exported `reqwest` types.
+pub mod reqwest {
+    pub use reqwest::Error;
+    pub use reqwest::Response;
+}
+use ::reqwest::*;
 
 /// Result containing RiotApiError on failure.
 pub type Result<T> = std::result::Result<T, RiotApiError>;
@@ -10,23 +14,23 @@ pub type Result<T> = std::result::Result<T, RiotApiError>;
 /// An error that occurred while processing a Riot API request.
 ///
 /// Although Riven may make multiple requests due to retries, this will always
-/// contain exactly one ReqwestError for the final request which failed.
+/// contain exactly one reqwest::Error for the final request which failed.
 #[derive(Debug)]
 pub struct RiotApiError {
-    reqwest_error: ReqwestError,
+    reqwest_error: Error,
     retries: u8,
     response: Option<Response>,
 }
 impl RiotApiError {
-    pub fn new(reqwest_error: ReqwestError, retries: u8, response: Option<Response>) -> Self {
+    pub fn new(reqwest_error: Error, retries: u8, response: Option<Response>) -> Self {
         Self {
             reqwest_error: reqwest_error,
             retries: retries,
             response: response,
         }
     }
-    /// The ReqwestError for the final failed request.
-    pub fn source_reqwest_error(&self) -> &ReqwestError {
+    /// The reqwest::Error for the final failed request.
+    pub fn source_reqwest_error(&self) -> &Error {
         &self.reqwest_error
     }
     /// The number of retires attempted. Zero means exactly one request, zero retries.
@@ -43,8 +47,8 @@ impl fmt::Display for RiotApiError {
         write!(f, "{:#?}", self)
     }
 }
-impl Error for RiotApiError {
-    fn source(&self) -> Option<&(dyn Error + 'static)> {
+impl StdError for RiotApiError {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
         Some(&self.reqwest_error)
     }
 }